Topic 5 Review

Basic Math Fact

100

What is the BMF of 300x2

3x2

200

What is the BMF of 600x5

6x5

300

What is the BMF of 200x7

2x7

400

What is the BMF of 200x10

2x1

500

What is the BMF 400x500

4x5

Break Apart

100

Break apart 237 into it's place values

200

30

7

200

Break apart 3,578 into it's place values

3,000

500

70

8

300

Solve 143x4

572

400

Solve 287x2

574

500

Solve 218x7

1,526

Vocab

100

Algorithm

A method to solving a problem

200

partial product

part of the answer

300

about

the approximate answer

400

Estimate

approximate answer

500

Reasonableness

How reasonable an answer is

Rounding

100

56x7

420

200

123x4

400

300

643x5

3000

400

835x9

7200

500

936x5

4500

Reasonableness

100

Kenny has 7 pouches. Each pouch has 21 marbles. About how many marbles does Kenny have?

140

200

Noah bought 42 games. Each game cost $5. About how much did he spend on all his games?

$200

300

Kayla has 9 flower pots. Each pot has 12 flowers. About how many flowers are in all? 

90

400

Daniel has 4 packs of gum. Each pack has 12 sticks. Daniel says he has about 400 sticks in all. Is this answer reasonable?

No. He has about 40 sticks. 

500

Jaz has 13 dogs. Each dog eats 3 cups of food a day. She says she goes through about 30 cups of food a day. Is this reasonable?

Yes. She goes through about 30 cups a day.