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Title: Splash Screen

1
Splash Screen
2
• Lesson 2-1 Algebra Addition Properties and
Subtraction Rules
• Lesson 2-2 Estimate Sums and Differences
• Lesson 2-3 Problem-Solving Strategy Estimate or
• Lesson 2-5 Subtract Numbers
• Lesson 2-6 Problem-Solving Investigation Choose
a Strategy
• Lesson 2-7 Subtract Across Zeros

3
Five-Minute Check (over Chapter 1) Main Idea and
Vocabulary California Standards Key Concepts
Rules Example 1 Use Addition Properties Example
Subtraction Rules
4
Lesson 1 MI/Vocab
• I will use addition properties and subtraction

5
Lesson 1 Standard 1
Standard 4AF1.0 Students use and interpret
variables, mathematical symbols, and properties
to write and simplify expressions and sentences.
6
Lesson 1 Key Concept 1
7
Lesson 1 Key Concept 2
8
Lesson 1 Ex1
Identify the property shown by 9 6 6 9.
The same numbers are being added on each side of
the equal sign, but they are in a different
order. This is the Commutative Property of
Addition because the order in which numbers are
added does not change the sum.
9
Lesson 1 CYP1
Identify the property shown by (2 3) 4 2
(3 4).
4. Associative Property of Multiplication

10
Lesson 1 Ex2
Find (18 26) 12.
You can use the Associative Property to add
mentally.
(26 18) 12
26 (18 12)
26 30
56
11
Lesson 1 CYP2
Find (13 31) 17.
1. 30
2. 44
3. 61
4. 52

12
Lesson 1 Ex3
When you subtract 0 from 5, the result is 5.
5 0 5
Answer So, the missing number is 0.
13
Lesson 1 CYP3
1. 7
2. 0
3. 1
4. 2

14
End of Lesson 1
15
Five-Minute Check (over Lesson 2-1) Main Idea and
Vocabulary California Standards Example 1
Estimate Sums Example 2 Estimate Sums Example 3
Estimate Differences Example 4 Estimate
Differences
16
Lesson 2 MI/Vocab
• I will estimate sums and differences of numbers.
• estimate

17
Lesson 2 Standard 1
Standard 4NS3.1 Demonstrate an
understanding of, and the ability to use,
standard algorithms for the subtraction of
multidigit numbers.
18
Lesson 2 Ex1
Sam wanted to buy a bicycle for 239 and a helmet
for 37. About how much money will Sam need to
buy the bicycle and helmet? Round to the tens
place.
Round each amount to the nearest tens place. Then
280
19
Lesson 2 CYP1
Olivia wants to buy a desk for 217 and a chair
to go with it for 56. About how much money does
Olivia need to buy the desk and chair? Round to
the nearest tens place.
1. 260
2. 270
3. 275
4. 280

20
Lesson 2 Ex2
Estimate 6,243 942. Round to the hundreds place.
Round to the nearest hundreds place. Then add.
7,100
21
Lesson 2 CYP2
Estimate 6,837 821. Round to the hundreds place.
1. 7,800
2. 7,700
3. 7,600
4. 7,500

22
Lesson 2 Ex3
Estimate 57.61 28.45. Round to the tens place.
Round each dollar amount to the nearest ten
dollars then subtract.
30.00
23
Lesson 2 CYP3
Estimate 25.72 17.55. Round to the tens place.
1. 40.00
2. 10.00
3. 20.00
4. 30.00

24
Lesson 2 Ex4
The table shows the worlds tallest mountains.
About how much taller is Mt. Everest than Lhoste?
Round to the thousands place.
25
Lesson 2 Ex4
Round each height to the nearest thousand. Then
subtract.
1,000
taller than Lhoste.
26
Lesson 2 CYP4
Estimate 74,218 51,933. Round to the thousands
place.
1. 22,000
2. 23,000
3. 22,700
4. 23,700

27
End of Lesson 2
28
Five-Minute Check (over Lesson 2-2) Main
Idea California Standards Example 1
Problem-Solving Strategy
29
Lesson 3 MI/Vocab
• I will determine when to estimate or find an

30
Lesson 3 Standard 1
Standard 4NS1.4 Decide when a rounded
solution is called for and explain why such a
solution may be appropriate.
Standard 4MR2.5 Indicate the relative advantages
of exact and approximate solutions to problems
and give answers to a specified degree of
accuracy.
31
Lesson 3 Ex1
Keith and his brother are going to build a tree
house. They will need 12 for nails, 95 for
tools, and 46 for wood. About how much money do
they need to build the tree house?
32
Lesson 3 Ex1
Understand
What facts do you know?
• Nails cost 12.
• Tools cost 95.
• Wood costs 46.

What do you need to find?
• Find about how much money they need to build the
tree house.

33
Lesson 3 Ex1
Plan
needed, you can estimate the sum.
34
Lesson 3 Ex1
Solve
Round each amount to each greatest place value.
12 95 46
10 100 50
160
tree house.
35
Lesson 3 Ex1
Check
Look back at the problem. Suppose the question
Since 153 is close to 160, an estimate of 160
is correct.
36
End of Lesson 3
37
Five-Minute Check (over Lesson 2-3) Main
Idea California Standards Example 1 Add Whole
Numbers Example 2 Add Multi-Digit Numbers
38
Lesson 4 MI/Vocab
• I will add numbers, including multidigit numbers.

39
Lesson 4 Standard 1
Standard 4NS3.1 Demonstrate an
understanding of, and the ability to use,
standard algorithms for the addition and
subtraction of multidigit numbers.
40
Lesson 4 Ex1
Estimate
41
Lesson 4 Ex1
1
7
9
42
Lesson 4 Ex1
9
43
Lesson 4 Ex1
6,
Check for Reasonableness
The estimate was 7,000. Since 6,997 is close to
the estimate, the answer is reasonable.
44
Lesson 4 CYP1
1. 9,041
2. 8,931
3. 9,000
4. 9,040

45
Lesson 4 Ex2
The three largest farms in Springfield are listed
in the table. What is the total size of the three
farms?
Estimate
46
Lesson 4 Ex2
9
1
7
47
Lesson 4 Ex2
1
9
1
1,
48
Lesson 4 Ex2
2
Answer The total size of the three farms is
21,979 acres.
Check for Reasonableness
The estimate was 22,000. Since 21,979 is close to
the estimate, the answer is reasonable.
49
Lesson 4 CYP2
1. 38,771
2. 37,117
3. 38,717
4. 37,617

50
End of Lesson 4
51
Five-Minute Check (over Lesson 2-4) Main
Idea California Standards Example 1 Subtract
Whole Numbers Example 2 Subtract Money
Subtract Numbers
52
Lesson 5 MI/Vocab
• I will subtract multidigit numbers.

53
Lesson 5 Standard 1
Standard 4NS3.1 Demonstrate an
understanding of, and the ability to use,
standard algorithms for the addition and
subtraction of multidigit numbers.
54
Lesson 5 Ex1
The Hernandez family flies 9,635 miles to visit
some cousins. Next year, they fly 3,867 miles to
visit their grandmother. How much farther did
they travel to see their cousins?
Estimate
55
Lesson 5 Ex1
Step 1 Subtract ones.
2
15
8
Step 2 Subtract tens.
12
5
6
56
Lesson 5 Ex1
Step 3 Subtract hundreds.
15
8
7
Step 4 Subtract thousands.
5,
57
Lesson 5 Ex1
Answer So, the Hernandez family traveled 5,768
miles further to see their cousins.
Check
The answer is correct and close to the estimate.
58
Lesson 5 CYP1
Subtract 8,249 2,871.
1. 6,487
2. 5,378
3. 6,789
4. 5,738

59
Lesson 5 Ex2
Elija had 96.47 in his checking account. He
wrote a check for 67.99 to buy a skateboard. How
much money did he have left?
Subtracting money is similar to subtracting whole
numbers.
Estimate
60
Lesson 5 Ex2
Step 1 Subtract pennies.
17
3
8
Step 2 Subtract dimes.
13
5
4
61
Lesson 5 Ex2
Step 3 Subtract dollars.
15
8
8.
Step 4 Subtract ten dollars.
2
62
Lesson 5 Ex2
Check
The answer is correct and close to the estimate.
63
Lesson 5 CYP2
Selena had 45.50 when she went to the store. She
bought shoes for 36.99. How much does she have
left?
1. 10.51
2. 9.50
3. 8.51
4. 8.49

64
End of Lesson 5
65
Five-Minute Check (over Lesson 2-5) Main
Idea California Standards Example 1
Problem-Solving Investigation
66
Lesson 6 MI/Vocab
• I will choose the best strategy to solve a
problem.

67
Lesson 6 Standard 1
Standard 4MR1.1 Analyze problems by identifying
relationships, distinguishing relevant from
irrelevant information, sequencing and
prioritizing information, and observing patterns.
68
Lesson 6 Standard 2
Standard 4NS3.0 Students solve problems
and division of whole numbers and understand the
relationships among the operations.
69
Lesson 6 Ex1
songs. YOUR MISSION Find how many songs Marco
70
Lesson 6 Ex1
Understand
What facts do you know?
• Each album has 14 songs.

What do you need to find?

71
Lesson 6 Ex1
Plan
You can organize the information in a table and
use repeated addition to find how many songs
72
Lesson 6 Ex1
Solve
album. Then continue to add 14 for each
14 14 28
73
Lesson 6 Ex1
Solve
42 14 56
74
Lesson 6 Ex1
Check
Look back at the problem.
56 14 42, 42 14 28, 28 14 14, and 14
14 0.
75
End of Lesson 6
76
Five-Minute Check (over Lesson 2-6) Main
Idea California Standards Example 1 Subtract
Across Zeros Example 2 Subtract Across Zeros
77
Lesson 7 MI/Vocab
• I will subtract multidigit numbers, when some
digits are zero.

78
Lesson 7 Standard
Standard 4NS3.1 Demonstrate an
understanding of, and the ability to use,
standard algorithms for the addition and
subtraction of multidigit numbers.
79
Lesson 7 Ex1
Refer to the table. How much larger is Jupiter
than Earth?
Step 1 Subtract ones.
9
10
10
1
4
80
Lesson 7 Ex1
Step 2 Subtract tens.
4
Step 3 Subtract hundreds.
11
1
4
81
Lesson 7 Ex1
Step 4 Subtract thousands.
11
3
9,
Step 5 Subtract ten thousands.
2
82
Lesson 7 Ex1
Step 6 Subtract hundred thousands.
1
Answer So, Jupiter is 129,444 km larger than
Earth.
Check
12,756 129,444 142,200. So, the
83
Lesson 7 CYP1
Subtract 132,788 64,329.
1. 68,599
2. 68,459
3. 67,461
4. 67,459

84
Lesson 7 Ex2
Marciel gave the store clerk 50.00 for her
purchase. She received 13.56 in change. How much
did she spend?
Step 1 Subtract pennies.
9
9
4
10
10
10
4
85
Lesson 7 Ex2
Step 2 Subtract dimes.
4
Step 3 Subtract ones.
6.
86
Lesson 7 Ex2
Step 4 Subtract tens.
3
87
Lesson 7 CYP2
Seki bought some headphones at the mall. If he
took 35.00 with him and has 13.74 left, how
1. 21.26
2. 22.76
3. 22.27
4. 21.76

88
End of Lesson 7
89
2
Five-Minute Checks Math Tool Chest Image Bank
Subtract Numbers
90
IB Instructions
To use the images that are on the following four
slides in your own presentation 1. Exit this
presentation. 2. Open a chapter presentation
using a full installation of Microsoft
PowerPoint in editing mode and scroll to the
Image Bank slides. 3. Select an image, copy it,
and paste it into your presentation.
91
IB 1
92
IB 2
93
IB 3
94
IB 4
95
2
Lesson 2-1 (over Chapter 1) Lesson 2-2 (over
Lesson 2-1) Lesson 2-3 (over Lesson 2-2) Lesson
2-4 (over Lesson 2-3) Lesson 2-5 (over Lesson
2-4) Lesson 2-6 (over Lesson 2-5) Lesson
2-7 (over Lesson 2-6)
96
5Min 1-1
(over Chapter 1)
Use any strategy to solve. Tell which strategy
you used. Lee Anns family travels 60 miles in
one hour. Robertos family travels 40 miles in
one hour. How many hours would it take for Lee
Anns family to travel as far as Robertos family
travels in 6 hours?
A. Robertos family travels 200 miles in 6
hours it will take Lee Anns family 4 hours to
travel 200 miles.
B. Robertos family travels 2,400 miles in 6
hours it will take Lee Anns family 4 hours to
travel 2,400 miles.
97
5Min 1-1
(over Chapter 1)
C. Robertos family travels 240 miles in 6
hours it will take Lee Anns family 4 hours to
travel 240 miles.
D. Robertos family travels 280 miles in 6
hours it will take Lee Anns family 5 hours to
travel 280 miles.
98
5Min 1-1
(over Chapter 1)
C. Robertos family travels 240 miles in 6
hours it will take Lee Anns family 4 hours to
travel 240 miles.
99
5Min 2-1
(over Lesson 2-1)
Copy and complete the number sentence. Write the
property or rule shown.
7 __ 7
1. 0 Associative Property
2. 0 Identity Property
3. 7 Identity Property
4. 1 Commutative Property

100
5Min 2-2
(over Lesson 2-1)
Copy and complete the number sentence. Write the
property or rule shown.
(9 2) 7 9 (__ 7)
1. 9 Associative Property
2. 2 Commutative Property
3. 2 Associative Property
4. 7 Associative Property

101
5Min 2-3
(over Lesson 2-1)
Copy and complete the number sentence. Write the
property or rule shown.
4 __ 0
1. 4 Subtraction Rule
2. 0 Identity Property
3. 0 Subtraction Rule
4. 4 Identity Property

102
5Min 2-4
(over Lesson 2-1)
Copy and complete the number sentence. Write the
property or rule shown.
385 22 22 __
1. 385 Associative Property
2. 385 Identity Property
3. 22 Commutative Property
4. 385 Commutative Property

103
5Min 3-1
(over Lesson 2-2)
Estimate 4.69 5.19.
1. 9.00
2. 11.00
3. 10.00
4. 9.50

104
5Min 3-2
(over Lesson 2-2)
Estimate 20.59 17.19.
1. 3.00
2. 38.00
3. 5.00
4. 4.00

105
5Min 3-3
(over Lesson 2-2)
Estimate 2,466 1,377.
1. 2,000
2. 1,100
3. 1,400
4. 3,000

106
5Min 3-4
(over Lesson 2-2)
Estimate 19,556 14,789.
1. 34,000
2. 5,000
3. 35,000
4. 33,000

107
5Min 3-5
(over Lesson 2-2)
Estimate 555 798.
1. 1,400
2. 1,350
3. 1,300
4. 1,200

108
5Min 4-1
(over Lesson 2-3)
Solve. Explain why you gave an estimate or an
exact answer. A turkey sandwich costs 3.75 and a
bottle of juice costs 1.45. If Tobin buys two
sandwiches and a bottle of juice, how much change
A. 1.00 estimate because the question asks
about an estimated amount of change
about an exact amount of change
109
5Min 4-1
(over Lesson 2-3)
C. 0 estimate because you always estimate when
using money
about an exact amount of change
110
5Min 4-1
(over Lesson 2-3)
about an exact amount of change
111
5Min 5-1
(over Lesson 2-4)
Find 568 29. Check you work by estimating.
1. 578
2. 607
3. 597
4. 600

112
5Min 5-2
(over Lesson 2-4)
Find 478 245. Check you work by estimating.
1. 823
2. 734
3. 712
4. 723

113
5Min 5-3
(over Lesson 2-4)
Find 8,238 676. Check you work by estimating.
1. 8,804
2. 8,914
3. 8,924
4. 9,004

114
5Min 5-4
(over Lesson 2-4)
Find 4,765 3,482. Check you work by estimating.
1. 8,247
2. 8,337
3. 8,547
4. 8,257

115
5Min 5-5
(over Lesson 2-4)
Find 54,763 2,788. Check you work by estimating.
1. 56,551
2. 57,561
3. 56,651
4. 57,551

116
5Min 6-1
(over Lesson 2-5)
Solve. Nori bought a game for 14.95 and a CD for
9.88. He gave the cashier 30.00. How much
1. 6.27
2. 5.17
3. 15.17
4. 5.16

117
5Min 6-2
(over Lesson 2-5)
Solve. Nadia guessed that there were 9,546 beans
in a jar. Steve guessed that there were 5,969
beans. How much larger was Nadias guess than
Steves?
1. 4,423
2. 6,423
3. 4,577
4. 3,577

118
5Min 7-1
(over Lesson 2-6)
Use any of the following strategies to solve
draw a picture, look for a pattern, make a table.
Tiana writes the following numbers in a row 2,
7, 9, 14, 16. What would be the next three
numbers in her pattern?
1. 21, 23, 28
2. 18, 23, 25
3. 18, 20, 22
4. 21, 26, 31

119
End of Custom Shows
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