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Chapter Menu

Divide by One-Digit Numbers

15

- Lesson 15-1 Divide Multiples of 10, 100, and

1,000 - Lesson 15-2 Estimate Quotients
- Lesson 15-3 Two-Digit Quotients
- Lesson 15-4 Problem-Solving Strategy Work

Backwards - Lesson 15-5 Three-Digit Quotients
- Lesson 15-6 Problem-Solving Investigation

Choose the Best Strategy - Lesson 15-7 Divide Money

Lesson 1 Menu

Five-Minute Check (over Chapter 14) Main

Idea California Standards Example 1 Use Models

to Divide Example 2 Divide Multiples Example 3

Divide Multiples

Lesson 1 MI/Vocab

- I will learn to divide multiples of 10, 100, and

1,000.

Lesson 1 Standard 1

Standard 3NS2.5 Solve division problems in which

a multi-digit number is evenly divided by a

one-digit number (135 5 ___ ).

Lesson 1 Ex1

Find 600 3.

Step 1 Show 600 as 60 tens.

Lesson 1 Ex1

Step 2 Divide the 60 tens into 3 equal groups.

200

200

200

Answer 600 3 200

Lesson 1 CYP1

Find 800 2.

- 250
- 400
- 300
- 500

Lesson 1 Ex2

The stadium has 1,800 seats divided equally into

6 sections. How many seats are in each section?

Find 1,800 6. Use basic facts and patterns.

18 6 3

18 ones 6 3 ones

180 6 30

18 tens 6 3 tens

1,800 6 300

18 hundreds 6 3 hundreds

Answer So, there are 300 seats in each section.

Lesson 1 CYP2

A class split up into 3 teams and had a bake sale

which made 600. How much did each team earn if

the money was split evenly between the teams?

- 200
- 300
- 150
- 100

Lesson 1 Ex3

How many seats are in each section if 4,200 seats

are divided equally into 7 sections?

Find 4,200 7.

42 7 6

Use the basic fact.

420 7 60

Use the pattern of zeros.

4,200 7 600

Answer So, there are 600 seats in each section.

Lesson 1 CYP3

Find 2,500 5.

- 350
- 400
- 500
- 600

End of Lesson 1

Lesson 2 Menu

Five-Minute Check (over Lesson 15-1) Main

Idea California Standards Example 1 Estimate by

Rounding Example 2 Real-World Example

Lesson 2 MI/Vocab

- I will estimate quotients.

Lesson 2 Standard 1

Standard 3NS2.5 Solve division problems in which

a multi-digit number is evenly divided by a

one-digit number (135 5 ___ ).

Standard 3MR2.1 Use estimation to verify the

reasonableness of calculated results.

Lesson 2 Ex1

There are 238 children in the school. If there

are 8 classrooms, about how many students are

there in each class?

Step 1 Round 238 to the nearest ten that has a

basic fact you can use.

Lesson 2 Ex1

Step 2 Write the basic fact you will use to

divide.

24 8 3

Step 3 Use the basic fact and patterns to divide.

24 8 3

240 8 30

Answer So, 238 8 is about 30. About 30

students are in each class.

Lesson 2 CYP1

A community center wants to break up its 103

members into teams of 5 for a basketball

tournament. About how many teams will the

tournament have?

- about 20 teams
- about 30 teams
- about 15 teams
- about 25 teams

Lesson 2 Ex2

A theater sold 1,113 tickets for 4 shows. About

how many tickets were sold for each show?

Step 1 Round 1,113 to the nearest hundred that

has a basic fact you can use.

Lesson 2 Ex2

Step 2 Write the basic fact you will use to

divide.

12 4 3

Step 3 Use the basic fact and patterns to divide.

12 4 3

1,200 4 300

Answer So, 1,113 4 is about 300. About 300

tickets were sold for each show.

Lesson 2 CYP2

A fundraiser generated 1,212 from 6 local

churches. About how much money did each church

give to the fundraiser?

- about 100
- about 200
- about 250
- about 300

End of Lesson 2

Lesson 3 Menu

Five-Minute Check (over Lesson 15-2) Main

Idea California Standards Example 1 Real-World

Example Example 2 Real-World Example

Division

Lesson 3 MI/Vocab

- I will divide a two-digit number by a one-digit

number.

Lesson 3 Standard 1

Standard 3NS2.5 Solve division problems in which

a multi-digit number is evenly divided by a

one-digit number (135 5 ___ ).

Standard 3NS2.3 Use the inverse

relationship of multiplication and division to

compute and check results.

Lesson 3 Ex1

A total of 95 students signed up for basketball.

How many 5-person teams will there be?

Step 1 Model 95. Show 5 groups.

5

95

Lesson 3 Ex1

Step 2 Divide the tens.

1

5

4

Lesson 3 Ex1

Step 3 Regroup and divide the ones.

9

5

45

0

Lesson 3 CYP1

A total of 200 kids signed on for after-school

softball. If there are 10 players to a team, how

many teams will be formed?

- 25 teams
- 21 teams
- 20 teams
- 30 teams

Lesson 3 Ex2

Rami wants to read an 84-page book in 6 days. How

many pages should he read per day?

Find 84 6.

Step 1 Decide if there are enough tens to divide.

8 gt 6 There are enough tens.

6

84

Lesson 3 Ex2

Step 2 Divide the tens.

Divide 8 tens by 6 groups.

1

Write 1 in the tens place.

Multiply. 1 6 tens 6 tens

6

Subtract 6 tens from 8 tens.

2

Compare. 2 lt 6

Lesson 3 Ex2

Step 3 Divide the ones.

Divide 24 ones by 6 groups.

4

Write 4 in the ones place.

4

Multiply. 4 6 ones 24 ones

24

Subtract 24 ones from 24 ones

0

Compare. 0 lt 6

Answer So, Rami should read 14 pages each day.

Lesson 3 Ex2

Check Multiply the quotient by the divisor.

2

14

6

4

8

The answer is correct.

Lesson 3 CYP2

Shelley makes 5 a day babysitting. She wants to

buy an outfit that costs 65. How many days will

Shelley have to baby-sit to earn enough money to

buy the outfit?

- 13 days
- 15 days
- 17 days
- 12 days

End of Lesson 3

Lesson 4 Menu

Five-Minute Check (over Lesson 15-3) Main

Idea California Standards Example 1

Problem-Solving Strategy

Lesson 4 MI/Vocab

- I will work backward to solve problems.

Lesson 4 Standard 1

Standard 3MR1.2 Determine when and how to break a

problem into simpler parts.

Standard 3NS2.1 Solve division problems

in which a multi-digit number is evenly divided

by a one-digit number (135 5 ___ ).

Lesson 4 Ex1

Frannie put some money in the bank to start a

savings account. Last month she put in enough

money to double that amount. Today, she put in

more money and the total amount doubled, again.

Now she has 20. How much money did Frannie

start with?

Lesson 4 Ex1

Understand

What facts do you know?

- The money doubled two times.
- The total amount at the end is 20.

What do you need to find?

- The amount of money Frannie started with.

Lesson 4 Ex1

Plan

Work backward from what you know, 20, to find

the amount Frannie started with.

Lesson 4 Ex1

Solve

Start with 20.

20

Find the number that was doubled.

Half of 20 is 10

10

Since the amount was doubled two times, find half

of 10.

Half of 10 is 5

Answer So, the amount of money Frannie started

with was 5.

5

Lesson 4 Ex1

Check

Look back at the problem. When you double 5, the

result is 5 2 or 10. When you double 10, the

result is 10 2 or 20.

So, the answer is correct.

End of Lesson 4

Lesson 5 Menu

Five-Minute Check (over Lesson 15-4) Main

Idea California Standards Example 1 Real-World

Example Example 2 Real-World Example

Lesson 5 MI/Vocab

- I will divide three-digit numbers by one-digit

numbers.

Lesson 5 Standard 1

Standard 3NS2.5 Solve division problems in which

a multi-digit number is evenly divided by a

one-digit number (135 5 ___ ).

Standard 3NS2.3 Use the inverse

relationship of multiplication and division to

compute and check results.

Lesson 5 Ex1

Hugan read a 572-page book in 4 weeks. How many

pages did he read each week?

Find 572 4.

Step 1 Divide the hundreds. 5 gt 4, so there are

enough hundreds.

1

Divide. 5 4

4

572

Multiply. 4 1 4

4

Subtract. 5 4 1

1

Compare. 1 lt 4

Lesson 5 Ex1

Step 2 Regroup. Regroup the remaining 1 hundred

as 10 tens. Bring down the 7 tens.

7

Lesson 5 Ex1

Step 3 Divide the tens. Regroup the remaining

ten as 10 ones. Bring down the ones.

4

Divide. 17 4

Multiply. 4 4 16

16

Subtract. 17 16 1

1

2

Compare. 1 lt 4

Lesson 5 Ex1

Step 4 Divide the ones.

3

Divide. 12 4 3

Multiply. 4 3 12

12

Subtract. 12 12 0

0

Compare. 0 lt 4

Answer So, Hugan read 143 pages each week.

Lesson 5 CYP1

A group of 500 people will be split into 4

groups. How many people will be in each group?

- 150 people
- 130 people
- 120 people
- 125 people

Lesson 5 Ex2

Akina is putting 115 books on 5 shelves. How many

books will go on each shelf?

Find 115 5.

Lesson 5 Ex2

Step 1 Divide the hundreds.

There are not enough hundreds to divide. Regroup

the 1 hundred as 10 tens.

5

115

11 gt 5 Place the first digit in the tens place.

Lesson 5 Ex2

Step 2 Divide the tens.

Divide. 11 5 2

2

Multiply. 5 2 10

Subtract. 11 10 1

10

Compare. 1 lt 5

1

Lesson 5 Ex2

Step 3 Divide the ones.

3

Bring down the ones.

Divide. 15 5 3

5

Multiply. 5 3 15

15

Subtract. 15 15 0

0

Compare. 0 lt 5

Answer So, Akina put 23 books on each shelf.

Lesson 5 Ex2

Check Multiply to check.

1

23

5

5

11

The answer is correct.

Lesson 5 CYP2

Tony wants to buy a mountain bike that costs

450. If he plans to buy it in 3 months, how much

money will Tony have to save each month?

- 175
- 100
- 150
- 130

End of Lesson 5

Lesson 6 Menu

Five-Minute Check (over Lesson 15-5) Main Idea

California Standards Example 1 Problem-Solving

Investigation

Lesson 6 MI/Vocab

- I will choose the best strategy to solve a

problem.

Lesson 6 Standard 1

Standard 3MR1.1 Analyze problems by identifying

relationships, distinguishing relevant from

irrelevant information, sequencing and

prioritizing information, and observing patterns.

Lesson 6 Standard 2

Standard 3NS2.5 Solve division problems in which

a multi-digit number is evenly divided by a

one-digit number (135 5 ___ ).

Lesson 6 Ex1

MING A community pool is in the shape of a

circle. It measures 80 feet

across. A square fence is going to be placed

around the pool. YOUR MISSION Find if 340 feet

of fencing is enough to go around the pool.

Lesson 6 Ex1

Understand

What facts do you know?

- The pool is a circle.
- It measures 80 feet across.
- A square fence will be put around the pool.
- You have 340 feet of fencing.

Lesson 6 Ex1

Understand

What do you need to find?

- You need to know if 340 feet of fencing is enough.

Lesson 6 Ex1

Plan

Divide 340 by 4 to find the length of each side

of the fence. Use make a drawing strategy to

compare the length of the fence to the pool.

Lesson 6 Ex1

Solve

Lesson 6 Ex1

Solve

340 feet of fence is enough to make a square that

is 85 feet on each side. 80 feet is smaller than

85 feet.

Answer So, 340 feet of fencing is enough to go

around the pool.

Lesson 6 Ex1

Check

Look back at the problem. Check the answer by

multiplying.

85 4 340

So, the answer is correct.

End of Lesson 6

Lesson 7 Menu

Five-Minute Check (over Lesson 15-6) Main

Idea California Standards Example 1 Real-World

Example Example 2 Quotients Less Than

1.00 Example 3 Find Unit Cost

Lesson 7 MI/Vocab

- I will divide amounts of money.

Lesson 7 Standard 1

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.

Lesson 7 Standard 2

Standard 3NS2.7 Determine the unit cost when

given the total cost and number of units.

Lesson 7 Ex1

Brian and 3 friends earned 9.68 for washing

cars. How much will each boy receive after they

share the money equally?

Find 9.68 4.

Lesson 7 Ex1

Step 1 Divide the dollars.

2

Divide. 9 4

4

9.68

Multiply. 4 2 dollars

8

Subtract. 9 8 1

1

Compare. 1 lt 4

Lesson 7 Ex1

Step 2 Divide the dimes.

4

Divide. 16 4

6

Multiply. 4 4 dimes

1 6

Subtract. 16 16 0

0

Compare. 0 lt 4

Lesson 7 Ex1

Step 3 Divide the pennies.

Place the decimal point and dollar sign directly

above.

2

Divide. 8 4 2

8

Multiply. 4 2 pennies

8

Subtract. 8 8 0

0

Compare. 0 lt 4

Answer So, each boy will receive 2.42.

Lesson 7 Ex1

Check for Reasonableness

2.42 is close to the estimate of 2.50.

So, the answer is reasonable.

Since 2.42 4 9.68, the answer is correct.

Lesson 7 CYP1

Angie and 3 friends pay 25 for tickets to see a

movie. How much did each of them pay for a movie

ticket?

- 6.25
- 5.25
- 7.25
- 5.50

Lesson 7 Ex2

Divide 4.35 5.

Step 1 Decide if there are enough dollars to

divide.

4 lt 5 There are not enough.

5

4.35

Lesson 7 Ex2

Step 2 Divide the dollars as 40 dimes.

8

4 0

3

5

Lesson 7 Ex2

Step 3 Divide the pennies.

Add the dollar sign and decimal point. Add a zero

to show 0 dollars.

7

35

0

Answer So, 4.35 5 0.87.

Lesson 7 Ex2

Check for Reasonableness

The estimate 0.80 is close to 0.87. So, the

answer is correct.

Lesson 7 CYP2

Find 3.80 4.

- 0.87
- 0.95
- 0.75
- 0.89

Lesson 7 Ex3

Freda paid 6.84 for 6 bags of marbles. How much

did each bag cost?

Find the unit cost. Divide 6.84 6.

Lesson 7 Ex3

1.

1

4

6

6.84

Check

6

0

8

6

2

4

24

0

So, the answer is correct.

Answer So, 6.84 6 1.14. Each bag costs

1.14.

Lesson 7 CYP3

Chris paid 7.25 for 5 gallons of fruit punch.

How much did Chris pay for each gallon of fruit

punch?

- 1.85
- 1.75
- 1.55
- 1.45

End of Lesson 7

CR Menu

Divide by One-Digit Numbers

15

Five-Minute Checks Math Tool Chest Image Bank

Division

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.

IB 1

IB 2

IB 3

IB 4

5Min Menu

Divide by One-Digit Numbers

15

Lesson 15-1 (over Chapter 14) Lesson 15-2 (over

Lesson 15-1) Lesson 15-3 (over Lesson

15-2) Lesson 15-4 (over Lesson 15-3) Lesson

15-5 (over Lesson 15-4) Lesson 15-6 (over Lesson

15-5) Lesson 15-7 (over Lesson 15-6)

5Min 1-1

(over Chapter 14)

Multiply.

3.24 7

- 21.68
- 4.48
- 6.68
- 22.68

5Min 1-2

(over Chapter 14)

Multiply.

8 9.51

- 76.08
- 79.06
- 74.56
- 72.08

5Min 1-3

(over Chapter 14)

At Doras diner, burgers are 3.13 and drinks are

1.29. How much are 3 burgers and 1 drink?

- 10.24
- 10.68
- 8.60
- 6.60

5Min 1-4

(over Chapter 14)

At Doras diner, burgers are 3.13 and drinks are

1.29. What is the cost of 2 burgers and 2 drinks?

- 8.84
- 6.68
- 4.60
- 5.60

5Min 2-1

(over Lesson 15-1)

Divide. Use patterns.

320 8

- 60
- 18
- 32
- 40

5Min 2-2

(over Lesson 15-1)

Divide. Use patterns.

4,500 5

- 220
- 90
- 900
- 22

5Min 2-3

(over Lesson 15-1)

Divide. Use patterns.

720 9

- 80
- 36
- 32
- 322

5Min 2-4

(over Lesson 15-1)

There are 6 boxes and 240 crayons. How many

crayons are in each box?

- 40 crayons
- 32 crayons
- 30 crayons
- 42 crayons

5Min 3-1

(over Lesson 15-2)

Estimate by rounding.

269 3

- 270 3 90
- 260 3 90
- 290 3 97
- 240 3 80

5Min 3-2

(over Lesson 15-2)

Estimate by rounding.

4,179 7

- 4,100 7 600
- 4,200 7 600
- 4,200 7 700
- 4,900 7 700

5Min 3-3

(over Lesson 15-2)

Estimate by rounding.

61 6

- 60 6 12
- 61 6 11
- 60 6 10
- 68 6 8

5Min 3-4

(over Lesson 15-2)

Estimate by rounding.

390 5

- 400 5 80
- 390 5 88
- 400 5 40
- 350 5 50

5Min 4-1

(over Lesson 15-3)

Divide 68 4. Use models if needed. Check your

answer.

- 22
- 24
- 12
- 17

5Min 4-2

(over Lesson 15-3)

Divide 48 3. Use models if needed. Check your

answer.

- 16
- 12
- 14
- 15

5Min 4-3

(over Lesson 15-3)

Divide 91 7. Use models if needed. Check your

answer.

- 14
- 13
- 10
- 8

5Min 4-4

(over Lesson 15-3)

Jaha has 96 beads for making bracelets. She uses

6 beads for each bracelet. How many bracelets can

she make?

- 90 bracelets
- 14 bracelets
- 16 bracelets
- 88 bracelets

5Min 5-1

(over Lesson 15-4)

Use the work backward strategy to solve. Julio

is saving money for a new guitar. He doubled his

money last year by babysitting his brother.

Then he tripled that amount by working for his

dad. Now he has 90. How much did he start with?

- 22
- 14
- 24
- 15

5Min 6-1

(over Lesson 15-5)

Divide 745 5. Check your answer.

- 155
- 135
- 322
- 149

5Min 6-2

(over Lesson 15-5)

Divide 288 6. Check your answers.

- 48
- 24
- 34
- 84

5Min 6-3

(over Lesson 15-5)

Divide 824 2. Check your answers.

- 411
- 128
- 244
- 412

5Min 6-4

(over Lesson 15-5)

There is a total of 784 pencils. There are 7

pencils in each box. How many boxes of pencils

are there?

- 110 boxes
- 144 boxes
- 112 boxes
- 122 boxes

5Min 7-1

(over Lesson 15-6)

Choose any strategy to solve the problem. Tia

sold 9 baskets at the flea market for 138. She

sold some baskets for 12 and some for 18 each.

How many of each basket did she sell?

- five 12 baskets and five 18 baskets
- four 12 baskets and five 18 baskets
- three 12 baskets and seven 18 baskets
- four 12 baskets and four 18 baskets

End of Custom Shows

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