Unit 5 Lesson 2Inverse Operations

Copyright © 2010 Kelly Mott

Unit 5 Lesson 2Inverse Operations

Copyright © 2010 Kelly Mott

Vocabulary

Copyright © 2010 Kelly Mott

6 ÷ 2 = 3The _____________________is the number that is divided. It represents the total number of items present.

Division Vocabulary

Copyright © 2010 Kelly Mott

6 ÷ 2 = 3Division Vocabulary

Copyright © 2010 Kelly Mott

The _____________________is the number you divide by.

6 ÷ 2 = 3Division Vocabulary

Copyright © 2010 Kelly Mott

The _____________________is the answer in division

6 ÷ 2 = 3

Dividend Quotient Divisor

LABEL THE PARTS: DRAW A LINE

Copyright © 2010 Kelly Mott

2 6The _____________________is the number that is divided. It represents the total number of items present.

3Division Vocabulary

Copyright © 2010 Kelly Mott

2 63

Division Vocabulary

Copyright © 2010 Kelly Mott

The _____________________is the number you divide by.

2 63

Division Vocabulary

Copyright © 2010 Kelly Mott

The _____________________is the answer in division.

2 6

Quotient Divisor Dividend

3

Copyright © 2010 Kelly Mott

LABEL THE PARTS: DRAW A LINE

• Multiplication and division are ____________.• You can solve division problems by using the

inverse operation.• Inverse means _________________________.

Copyright © 2010 Kelly Mott

Division Vocabulary

Inverse Operation Part 1

Copyright © 2010 Kelly Mott

Inverse Operation: Practice 1

2 4

2 14

x

x

Copyright © 2010 Kelly Mott

Inverse Operation: Practice 2

3 12

3 18

x

x

Copyright © 2010 Kelly Mott

Inverse Operation: Practice 3

4 8

4 44

x

x

Copyright © 2010 Kelly Mott

Inverse Operation: Practice 4

5 35

5 50

x

x

Copyright © 2010 Kelly Mott

Inverse Operation Part 2

Copyright © 2010 Kelly Mott

14 ÷ 2 =

Ask yourself: 2 times what = 14.

Copyright © 2010 Kelly Mott

Inverse Operation: Practice 1

18 ÷ 3 =

Ask yourself: 3 times what = 18.

Copyright © 2010 Kelly Mott

Inverse Operation: Practice 2

20 ÷ 4 =

Ask yourself: 4 times what = 20.

Copyright © 2010 Kelly Mott

Inverse Operation: Practice 3

35 ÷ 5 =

Ask yourself: 5 times what = 35.

Copyright © 2010 Kelly Mott

Inverse Operation: Practice 4

Checking Division Part 1

Copyright © 2010 Kelly Mott

Unit 5 Lesson 2: Checking Division• You can check division by using the inverse

operation ( by _____________________).

Example: Check:

2 168

Copyright © 2010 Kelly Mott

Checking Division: Practice 1

Unit 5 Lesson 2: Checking Division

Example: Check:

3 155

Copyright © 2010 Kelly Mott

Checking Division: Practice 2

Unit 5 Lesson 2: Checking Division

Example: Check:

4 246

Copyright © 2010 Kelly Mott

Checking Division: Practice 3

Unit 5 Lesson 2: Checking Division

Example: Check:

2 16

Copyright © 2010 Kelly Mott

Checking Division: Practice 4

Unit 5 Lesson 2: Checking Division

Example: Check:

4 28

Copyright © 2010 Kelly Mott

Checking Division: Practice 5

Unit 5 Lesson 2: Checking Division

Example: Check:

5 55

Copyright © 2010 Kelly Mott

Checking Division: Practice 6

Checking Division Part 2

Copyright © 2010 Kelly Mott

Example: Check:

12 ÷ 2 = 6

Copyright © 2010 Kelly Mott

Checking Division: Practice 1

Example: Check:

15 ÷ 3 = 5

Copyright © 2010 Kelly Mott

Checking Division: Practice 2

Example: Check:

32 ÷ 4 =

Copyright © 2010 Kelly Mott

Checking Division: Practice 3

Example: Check:

25 ÷ 5 =

Copyright © 2010 Kelly Mott

Checking Division: Practice 4

Example: Check:

40 ÷ 5 =

Copyright © 2010 Kelly Mott

Checking Division: Practice 5

PAM Problems

Copyright © 2010 Kelly Mott

1. Katrina writes 6 ÷ 2 = 3. What two multiplication sentences can she use to check her answer?

Question: Steps:

Solve: Answer in Words:

Copyright © 2010 Kelly Mott

2. Ramon has 8 bird s in 2 cages. Each cage has the same number of birds in it. How many birds are in each cage?

Question: Steps:

Solve: Answer in Words:

Copyright © 2010 Kelly Mott

How did you do?

Copyright © 2010 Kelly Mott

HOMEWORKMath Steps Pages: 117-118Teacher Worksheets:Re-teach Page: 90

Copyright © 2010 Kelly Mott