Splash Screen

1
Splash Screen
2
Chapter Menu
Subtraction
3

• Lesson 3-1 Two-Digit Subtraction
• Lesson 3-2 Estimate Differences
• Lesson 3-3 Subtract Money
• Lesson 3-4 Problem-Solving Skill Reasonable
  Answers
• Lesson 3-5 Three-Digit Subtraction with
  Regrouping
• Lesson 3-6 Problem-Solving Investigation Choose
  a Strategy
• Lesson 3-7 Subtract Greater Numbers
• Lesson 3-8 Subtract Across Zeros
• Lesson 3-9 Algebra Expressions and Number
  Sentences

3
Lesson 1 Menu
Five-Minute Check (over Chapter 2) Main
Idea California Standards Example 1 No
Regrouping Example 2 Regrouping
4
Lesson 1 MI/Vocab

• I will subtract two-digit and one-digit numbers.

5
Lesson 1 Standard
Standard 3NS2.1 Find the sum or
difference of two whole numbers between 0 and
10,000.
6
Lesson 1 Ex1
A lion can run 50 miles per hour. A camel can run
20 miles per hour. How much faster can the lion
run?
You can use subtraction to solve the problem.
You need to find 50 20.
7
Lesson 1 Ex1
Step 1 Subtract ones.
0 ones 0 ones 0 ones
0
Step 2 Subtract tens.
5 tens 2 tens 3 tens
3
Answer So, the lion can run 30 miles per hour
faster than the camel.
8
Lesson 1 Ex1
Check
You can use addition to check your answer.
30 20 50
So the answer is correct.
9
Lesson 1 CYP1
A cheetah can run up to 70 miles per hour. A
rabbit can run up to 20 mph. How much faster can
a cheetah run?

1. 50 mph
2. 40 mph
3. 55 mph
4. 60 mph

10
Lesson 1 Ex2
A giraffe can run 32 miles per hour. An elephant
can run 25 miles per hour. How much faster can
the giraffe run?
You need to find 32 25.
Step 1 Subtract ones.
You cannot take 5 ones from 2 ones.
12
2
Regroup 1 ten as 10 ones.
2 ones ten ones 12 ones
7
12 ones 5 ones 7 ones
11
Lesson 1 Ex2
Step 2 Subtract tens.
2 tens 2 tens 0 tens
0
Answer So, the giraffe can run 7 miles per hour
faster than the elephant.
12
Lesson 1 Ex2
Check
You can use addition to check your answer.
7 25 32
So the answer is correct.
13
Lesson 1 CYP2
A fox can run 42 miles per hour and a chicken can
run 9 miles per hour. How much faster is the fox?

1. 40 mph
2. 37 mph
3. 43 mph
4. 33 mph

14
End of Lesson 1
15
Lesson 2 Menu
Five-Minute Check (over Lesson 3-1) Main
Idea California Standards Example 1 Estimate
Differences Example 2 Estimate Differences
16
Lesson 2 MI/Vocab

• I will estimate differences using rounding.

17
Lesson 2 Standard
Standard 3NS1.4 Round off numbers to 10,000 to
the nearest ten, hundred, and thousand.
Standard 3NS2.1 Find the sum or
difference of two whole numbers between 0 and
10,000.
18
Lesson 2 Ex1
Rosalinda bought a package of 62 carrots and a
bag of 18 potatoes. About how many more carrots
were there?
You need to estimate 62 18.
Step 1 Round each number to the nearest ten.
19
Lesson 2 Ex1
Step 2 Subtract.
40
Answer So, there are about 40 more carrots.
20
Lesson 2 CYP1
Noah bought a bouquet of flowers with 19 roses
and 8 daisies. About how many more roses were
there?

1. 11 more roses
2. 10 more roses
3. 12 more roses
4. 8 more roses

21
Lesson 2 Ex2
It is 2,816 miles from Washington, D.C. to San
Francisco and 671 miles from Washington, D.C. to
Chicago. About how many miles farther is it to
San Francisco? Round to the nearest hundred.
You need to estimate 2,816 671.
22
Lesson 2 Ex2
Step 1 Round each number to the nearest hundred.
23
Lesson 2 Ex2
Step 2 Subtract.
2,100
Answer So, San Francisco is about 2,100 miles
farther than Chicago.
24
Lesson 2 CYP2
It is 142 miles from Columbus, Ohio to Cleveland,
Ohio, and 106 miles from Columbus to Cincinnati,
Ohio. About how many miles farther is it to
Cleveland? Round to the nearest ten.

1. 136 miles
2. 36 miles
3. 30 miles
4. 100 miles

25
End of Lesson 2
26
Lesson 3 Menu
Five-Minute Check (over Lesson 3-2) Main
Idea California Standards Example 1 Subtract
Cents Example 2 Subtract Dollars
27
Lesson 3 MI/Vocab

• I will subtract money.

28
Lesson 3 Standard 1
Standard 3NS2.1 Find the sum or
difference of two whole numbers between 0 and
10,000.
29
Lesson 3 Standard 2
Standard 3NS3.3 Solve problems
involving addition, subtraction, multiplication,
and division of money amounts in decimal notation
and multiply and divide money amounts in decimal
notation by using whole-number multipliers and
divisors.
30
Lesson 3 Ex1
Fina had 86 cents. She bought a bag of peanuts
for 73 cents. How much change did she receive?
You need to find the difference between 86 and
73.
31
Lesson 3 Ex1
One Way Subtract Cents
Subtract the ones.
Subtract the tens.
3
1

Place the cents sign after the difference.
32
Lesson 3 Ex1
Another Way Subtract Dollars
0.13
Answer Fina received 13 cents in change.
33
Lesson 3 Ex1
Check Use addition to check your subtraction.
So, the answer is correct.
34
Lesson 3 CYP1
Marsalla had 0.49 and spent 0.28 on a pencil.
How much change did she receive?

1. 21
2. 20
3. 10
4. 22

35
Lesson 3 Ex2
Marisa paid 34 for a pair of jeans. Dona paid
43. How much more did Dona pay?
You need to find the difference between 34 and
43.
When you subtract money, you often need to
regroup.
36
Lesson 3 Ex2
Regroup 1 ten as 10 ones.
3
13
Subtract the ones.
Subtract the tens.
9

0
Place the dollar sign before the difference.
Answer Dona paid 9 more than Marisa.
37
Lesson 3 Ex2
Check for Reasonableness
Since 9 is close to the estimate of 10, the
answer is reasonable.
Check Use addition.
So, the answer is correct.
38
Lesson 3 CYP2
The price for an adult haircut is 21. The price
for a child haircut is 9. How much more is an
adult haircut?

1. 8
2. 10
3. 12
4. 13

39
End of Lesson 3
40
Lesson 4 Menu
Five-Minute Check (over Lesson 3-3) Main
Idea California Standards Example 1
Problem-Solving Skill
41
Lesson 4 MI/Vocab

• I will decide whether an answer to a problem is
  reasonable.

42
Lesson 4 Standard 1
Standard 3MR3.1 Evaluate the reasonableness of
the solution in the context of the original
situation.
Standard 3NS2.1 Find the sum or difference of two
whole numbers between 0 and 10,000.
43
Lesson 4 Ex1
Kenji bought a box of 85 straws of 3 different
colors. He found that 53 straws were blue and
green. Kenji thinks that about 30 straws are
pink. Is this a reasonable answer?
44
Lesson 4 Ex1
Understand
What facts do you know?

• There are 85 straws.
• There are 3 colors of straws.
• There are 53 blue and green straws.

What do you need to find?

• Decide whether 30 is a reasonable amount of pink
  straws.

45
Lesson 4 Ex1
Plan
Use subtraction to find the number of pink
straws. Then compare the answer to 30.
46
Lesson 4 Ex1
Solve
Subtract the number of blue and green straws from
the total number of straws.
32
Answer Since 32 is close to 30, it is
reasonable to say that 30 of the straws are pink.
47
Lesson 4 Ex1
Check
Look back at the problem. Estimate by rounding.
So, the answer makes sense for the problem.
48
End of Lesson 4
49
Lesson 5 Menu
Five-Minute Check (over Lesson 3-4) Main
Idea California Standards Example 1 Real-World
Example Example 2 Real-World Example
Subtract Three-Digit Numbers with Regrouping
50
Lesson 5 MI/Vocab

• I will subtract three-digit numbers with
  regrouping.

51
Lesson 5 Standard 1
Standard 3NS2.1 Find the sum or difference of two
whole numbers between 0 and 10,000.
Standard 3MR3.1 Evaluate the reasonableness of
the solution in the context of the original
situation.
52
Lesson 5 Ex1
Binte has 215 baseball cards. Susana has 88. What
is the difference in the number of cards they
have?
You need to find 215 88.
Step 1 Subtract ones.
You cannot take 8 ones from 5 ones.
0
15
Regroup 1 ten as 10 ones.
5 ones 10 ones 15 ones
7
Subtract 15 ones 8 ones 7 ones.
53
Lesson 5 Ex1
Step 2 Subtract tens.
10
You cannot take 8 tens from 0 tens.
1
Regroup 1 hundred as 10 tens.
0 tens 10 tens 10 tens
2
Subtract 10 tens 8 tens 2 tens.
54
Lesson 5 Ex1
Step 3 Subtract hundreds.
Subtract 1 hundred 0 hundred 1 hundred.
1
Answer 215 88 127 cards
55
Lesson 5 CYP1
Samiya had 326 in her savings account. She spent
99 on a new bike. How much is left in her
savings account?

1. 225
2. 229
3. 230
4. 227

56
Lesson 5 Ex2
Lauren bought a bracelet on sale for 7.59. How
much change did she receive from 7.75?
You need to find 7.75 7.59.
Step 1 Subtract cents.
You cannot take 9 pennies from 5 pennies.
6
15
Regroup 1 dime as 10 pennies.
5 pennies 10 pennies 15 pennies
Subtract 15 pennies 9 pennies 6 pennies.
6
1
Subtract 6 dimes 5 dimes 1 dime.
57
Lesson 5 Ex2
Step 2 Subtract dollars.
7 dollars 7 dollars 0 dollars

0.
Place the dollar sign before the difference.
Answer So, Lauren received 0.16 in change.
58
Lesson 5 CYP2
Linda bought a purse for 9.77. How much change
did she receive from 10.00?

1. 1.23
2. 0.23
3. 0.77
4. 0.22

59
End of Lesson 5
60
Lesson 6 Menu
Five-Minute Check (over Lesson 3-5) Main
Idea California Standards Example 1
Problem-Solving Investigation
61
Lesson 6 MI/Vocab

• I will choose the best strategy to solve a
  problem.

62
Lesson 6 Standard 1
Standard 3MR1.1 Analyze problems by identifying
relationships, distinguishing relevant from
irrelevant information, sequencing and
prioritizing information, and observing patterns.
63
Lesson 6 Standard 2
Standard 3NS2.1 Find the sum or
difference of two whole numbers between 0 and
10,000.
64
Lesson 6 Ex1
MIRANDA For a class project, my teacher needs
155 cardboard rolls from paper towels. So far,
Marissa collected 24, Stan collected 32, and I
collected 18. YOUR MISSION Find out how many
more cardboard rolls are needed.
65
Lesson 6 Ex1
Understand
What facts do you know?

• You know that 155 cardboard rolls are needed.
• Three students have already collected 24, 32, and
  18 cardboard rolls.

What do you need to find?

• Find how many more rolls are needed.

66
Lesson 6 Ex1
Plan
First add to find the number of rolls collected.
Then, subtract to find the amount still needed.
67
Lesson 6 Ex1
Solve
So, 74 rolls have been collected.
68
Lesson 6 Ex1
Solve
Subtract 74 from 155 to find out how many rolls
are still needed.
Answer So, 81 cardboard rolls are needed.
69
Lesson 6 Ex1
Check
Look back at the problem. You can check by
adding. Since 81 74 155, then answer is
correct.
70
End of Lesson 6
71
Lesson 7 Menu
Five-Minute Check (over Lesson 3-6) Main
Idea California Standards Example 1 Real-World
Example Example 2 Real-World Example
72
Lesson 7 MI/Vocab

• I will learn to subtract three- and four-digit
  numbers.

73
Lesson 7 Standard 1
Standard 3NS2.1 Find the sum or
difference of two whole numbers between 0 and
10,000.
Standard 3MR2.6 Make precise calculations and
check the validity of the results from the
context of the problem.
74
Lesson 7 Ex1
What is the difference between Angel Falls and
Yosemite Falls?
You need to find 3,212 2,425.
Step 1 Subtract ones.
You cannot take 5 ones from 2 ones.
0
12
Regroup 1 ten as 10 ones.
2 ones 10 ones 12 ones
7
12 ones 5 ones 7 ones
75
Lesson 7 Ex1
Step 2 Subtract tens.
10
You cannot take 2 tens from 0 tens.
1
Regroup 1 hundred as 10 tens.
0 tens 10 tens 10 tens
8
10 tens 2 tens 8 tens
76
Lesson 7 Ex1
Step 3 Subtract hundreds and thousands.
11
You cannot take 4 hundreds from 1 hundred.
2
Regroup 1 thousand as 10 hundreds.
1 hundred 10 hundreds 11 hundreds
7
11 hundreds 4 hundreds 7 hundreds
2 thousands 2 thousands 0 thousands
Answer Angel Falls is 787 feet higher than
Yosemite Falls.
77
Lesson 7 CYP1
There were 4,321 people at the baseball game on
Friday. There were 2,667 people at the game on
Saturday. How many more people came to the game
on Friday?

1. 1,654
2. 1,774
3. 2,436
4. 2,654

78
Lesson 7 Ex2
The Nile River is 4,145 miles long. The Yangtze
River is 3,720 miles long. How much longer is the
Nile River than the Yangtze River?
You need to find 4,145 3,720.
Step 1 Subtract ones.
5
79
Lesson 7 Ex2
Step 2 Subtract tens.
2
Step 3 Subtract hundreds and thousands.
3
11
4
Answer So, the Nile River is 425 miles longer.
80
Lesson 7 CYP2
The Sears Tower is 1,729 feet tall. The Empire
State Building is 1,472 feet tall. How much
taller is the Sears Tower?

1. 300 feet
2. 295 feet
3. 257 feet
4. 375 feet

81
End of Lesson 7
82
Lesson 8 Menu
Five-Minute Check (over Lesson 3-7) Main
Idea California Standards Example 1 Subtract
Across Zeros Example 2 Subtract Across Zeros
83
Lesson 8 MI/Vocab

• I will learn how to subtract across zeros.

84
Lesson 8 Standard 1
Standard 3NS2.1 Find the sum or
difference of two whole numbers between 0 and
10,000.
Standard 3MR2.6 Make precise calculations and
check the validity of the results from the
context of the problem.
85
Lesson 8 Ex1
A large box of peppers weighs 200 pounds. A small
box of peppers weighs 145 pounds. What is the
difference in the weight of the two boxes of
peppers?
You need to find 200 145.
86
Lesson 8 Ex1
Step 1 Regroup.
You cannot take 5 ones from 0 ones. Regroup. There
are no tens to regroup. Regroup 2 hundreds as 1
hundred and 10 tens.
1
10
87
Lesson 8 Ex1
Step 2 Regroup.
9
Regroup 10 tens as 9 tens and 10 ones.
10
88
Lesson 8 Ex1
Step 3 Subtract.
Subtract the ones, tens, and hundreds.
5
5
Answer 55 pounds
89
Lesson 8 CYP1
Annas bucket holds 800 ounces. Meenas holds 655
ounces. How many more ounces does Annas bucket
hold?

1. 150 ounces
2. 140 ounces
3. 155 ounces
4. 145 ounces

90
Lesson 8 Ex2
Gina and Bruce are playing a video game. Gina
scored 817 points for eliminating the red
monster. Bruce scored 3,000 points for
eliminating the green monster. How many more
points did Bruce score?
You need to find 3,000 817.
91
Lesson 8 Ex2
Step 1 Regroup.
You cannot take 7 ones from 0 ones. There are no
tens or hundreds. Regroup 1 thousand as 10
hundreds.
2
10
92
Lesson 8 Ex2
Step 2 Regroup.
9
Regroup again. Regroup 1 hundred as 10 tens.
10
93
Lesson 8 Ex2
Step 3 Regroup and subtract.
Regroup 1 ten as 10 ones. Subtract. 10 ones 7
ones 3 ones 9 tens 1 ten 8 tens 9
hundreds 8 hundreds 1 hundred 2 thousands
0 thousands 2 thousands
9
10
3
8
1
2,
Answer So, Bruce scored 2,183 more points than
Gina.
94
Lesson 8 Ex2
Check Add up to check.
So the answer is correct.
95
Lesson 8 CYP2
Lisa has 2,000 frequent-flyer miles. She uses
1,624 miles on a trip. How many frequent-flyer
miles does she have left?

1. 376 miles
2. 476 miles
3. 482 miles
4. 486 miles

96
End of Lesson 8
97
Lesson 9 Menu
Five-Minute Check (over Lesson 3-8) Main Idea and
Vocabulary California Standards Example 1
Real-World Example Example 2 Real-World
Example Example 3 Write a Number
Sentence Example 4 Compare Expressions
98
Lesson 9 MI/Vocab

• I will learn to write and simplify expressions.

• expression
• number sentence

99
Lesson 9 Standard 1
Standard 3AF1.1 Represent relationships
of quantities in the form of mathematical
expressions, equations, and inequalities.
100
Lesson 9 Standard 2
Standard 3AF1.3 Select appropriate operational
and relational symbols to make an expression
true. (e.g., if 4 __ 3 12, what operational
symbol goes in the blank?).
101
Lesson 9 Ex1
Write an expression for the number of red apples
and yellow apples.

5
3
Answer The expression is 5 3.
102
Lesson 9 CYP1
Seth has 6 purple beads and Summer has 2 red
beads. Which expression shows how many beads they
have altogether?

1. 6 2
2. 6 2
3. 6 6
4. 2 2

103
Lesson 9 Ex2
Write a number sentence to show how many apples
are red and yellow.

5
3

8
Answer The number sentence is 5 3 8.
104
Lesson 9 CYP2
Gwen has 4 cookies and Marissa has 5 cupcakes.
Which number sentence shows how many treats they
have altogether?

1. 5 4
2. 4 5
3. 4 5 9
4. 5 4 1

105
Lesson 9 Ex3
Try .
17 8 9
25 9
Answer false 25 does not equal 9.
106
Lesson 9 Ex3
Try .
17 8 9
9 9
Answer true
107
Lesson 9 CYP3
Which number sentence is true?

1. 5 3 2
2. 5 3 8
3. 5 3 8
4. 5 8 2

108
Lesson 9 Ex4
Write the expressions.
Add 6 9. Add 8 6 2.
15 lt 16
Compare.
Answer 6 9 lt 8 6 2
109
Lesson 9 CYP4
Complete the number sentence.

1. lt
2. gt

110
End of Lesson 9
111
CR Menu
Subtraction
3
Five-Minute Checks Math Tool Chest Image Bank
Subtract Three-Digit Numbers with Regrouping
112
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113
IB 1
114
IB 2
115
IB 3
116
IB 4
117
5Min Menu
Subtraction
3
Lesson 3-1 (over Chapter 2) Lesson 3-2 (over
Lesson 3-1) Lesson 3-3 (over Lesson 3-2) Lesson
3-4 (over Lesson 3-3) Lesson 3-5 (over Lesson
3-4) Lesson 3-6 (over Lesson 3-5) Lesson
3-7 (over Lesson 3-6) Lesson 3-8 (over Lesson
3-7) Lesson 3-9 (over Lesson 3-8)
118
5Min 1-1
(over Chapter 2)
Find each sum.
700 231

1. 900
2. 931
3. 885
4. 923

119
5Min 1-2
(over Chapter 2)
Find each sum.
764 372

1. 1,136
2. 556
3. 878
4. 900

120
5Min 1-3
(over Chapter 2)
Find each sum.
1,625 518

1. 2,145
2. 2,000
3. 2,143
4. 5,522

121
5Min 1-4
(over Chapter 2)
Find each sum.
3,437 2,195

1. 5,632
2. 5,602
3. 6,504
4. 5,622

122
5Min 1-5
(over Chapter 2)
Find each sum.
4,306 5,974

1. 10,885
2. 9,585
3. 10,820
4. 10,280

123
5Min 2-1
(over Lesson 3-1)
Subtract. Check your answer.
54 17

1. 29
2. 35
3. 45
4. 37

124
5Min 2-2
(over Lesson 3-1)
Subtract. Check your answer.
60 24

1. 36
2. 55
3. 56
4. 63

125
5Min 2-3
(over Lesson 3-1)
Subtract. Check your answer.
28 12

1. 16
2. 26
3. 19
4. 11

126
5Min 2-4
(over Lesson 3-1)
Subtract. Check your answer.
87 38

1. 44
2. 39
3. 43
4. 49

127
5Min 3-1
(over Lesson 3-2)
Estimate. Round to the nearest ten.
72 36

1. 30
2. 45
3. 15
4. 29

128
5Min 3-2
(over Lesson 3-2)
Estimate. Round to the nearest ten.
28 14

1. 19
2. 15
3. 25
4. 20

129
5Min 3-3
(over Lesson 3-2)
Estimate. Round to the nearest hundred.
582 247

1. 385
2. 209
3. 400
4. 525

130
5Min 3-4
(over Lesson 3-2)
Estimate. Round to the nearest hundred.
805 372

1. 395
2. 405
3. 295
4. 400

131
5Min 4-1
(over Lesson 3-3)
Subtract. Check your answer.
29 14

1. 15
2. 13
3. 18
4. 11

132
5Min 4-2
(over Lesson 3-3)
Subtract. Check your answer.
51 27

1. 13
2. 24
3. 23
4. 19

133
5Min 4-3
(over Lesson 3-3)
Subtract. Check your answer.
32 9

1. 22
2. 19
3. 18
4. 23

134
5Min 4-4
(over Lesson 3-3)
Subtract. Check your answer.
0.99 0.12

1. 0.87
2. 0.99
3. 0.98
4. 0.88

135
5Min 4-5
(over Lesson 3-3)
Subtract. Check your answer.
0.75 0.48

1. 0.29
2. 0.55
3. 0.19
4. 0.27

136
5Min 5-1
(over Lesson 3-4)
Mr. Moore says he needs 100 math books for the
two Grade 3 classes in the school. Is this a
reasonable estimate if there are 21 students in
one class and 24 students in the other class?

1. Yes 100 books would not cover all of the
   students in class.
2. No 100 books are too many.

137
5Min 6-1
(over Lesson 3-5)
Subtract. Check your answer.
525 411

1. 110
2. 114
3. 109
4. 115

138
5Min 6-2
(over Lesson 3-5)
Subtract. Check your answer.
672 148

1. 524
2. 520
3. 495
4. 409

139
5Min 6-3
(over Lesson 3-5)
Subtract. Check your answer.
8.25 4.85

1. 3.41
2. 3.59
3. 3.40
4. 3.96

140
5Min 6-4
(over Lesson 3-5)
Subtract. Check your answer.
431 67

1. 364
2. 296
3. 463
4. 634

141
5Min 6-5
(over Lesson 3-5)
Subtract. Check your answer.
367 289

1. 87
2. 88
3. 99
4. 78

142
5Min 7-1
(over Lesson 3-6)
Solve. Chris bought tomatoes for 2.58 and
lettuce for 1.99. About how much change did he
receive for 10.00?

1. 5.00
2. 4.00
3. 2.50
4. 9.00

143
5Min 8-1
(over Lesson 3-7)
Subtract. Check for reasonableness.
1,621 349

1. 1,908
2. 802
3. 902
4. 1,272

144
5Min 8-2
(over Lesson 3-7)
Subtract. Check for reasonableness.
2,837 495

1. 2,342
2. 2,242
3. 2,102
4. 900

145
5Min 8-3
(over Lesson 3-7)
Subtract. Check for reasonableness.
6,255 3,187

1. 3,222
2. 3,068
3. 2,988
4. 1,555

146
5Min 8-4
(over Lesson 3-7)
Subtract. Check for reasonableness.
7,243 5,491

1. 1,752
2. 1,522
3. 1,255
4. 900

147
5Min 9-1
(over Lesson 3-8)
Subtract. Check for reasonableness.
503 28

1. 475
2. 252
3. 105
4. 400

148
5Min 9-2
(over Lesson 3-8)
Subtract. Check for reasonableness.
800 136

1. 466
2. 545
3. 538
4. 664

149
5Min 9-3
(over Lesson 3-8)
Subtract. Check for reasonableness.
17.00 1.49

1. 15.15
2. 13.55
3. 15.51
4. 9.55

150
5Min 9-4
(over Lesson 3-8)
Subtract. Check for reasonableness.
3,500 1,875

1. 1,625
2. 1,555
3. 925
4. 1,375

151
End of Custom Shows
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