Module 5 Review

Vocabulary

100

These tell me to do something FIRST in a problem.

Parentheses

200

Multiples of 10 always have what number in the ones place value?

0

300

The property where you multiply one factor by the addends of a multiple of 10, and then find the sum of those products.

ex. 3 x 20 = 3 x (10 + 10)

The Distributive Property

400

What property tells me that 10x3 is the same thing as 3x10?

The Commutative Property

500

The property that tells us when you move the grouping of factors, the answer stays the same. 

ex. 2 x (4 x 3) = (2 x 4) x 3

The Associative Property

Word Problems

100

Dustin earns $30 for each lawn he mow. How much does Dustin earn for 3 lawns?

$90

200

Nina rides her bike 20 miles each day for 3 days. Does Nina ride more than 75 miles?

No, Nina only rides her bike for 60 miles.

300

Blaise says that 4 x 30 is equal to 4 x 3 tens, which would give an answer of 7 tens. Is Blaise correct? Explain your answer.

No, Blaise is correct that 30 is equal to 3 tens, but the answer would be 12 tens.

400

Taylor says that everytime she multiplies a number by a multiply of ten she will get an even number. Is she correct? Explain your answer.

Yes! We know that an even number times an even number is always even and an odd number times and even number is ALSO always even. Since 10 is an even number, the product will always be even.

500

Aidan says that he can use the Distributive Property to write the product 3 x 20 as 3 x (10 x 10). Is he correct? Explain your answer to be correct.

No, to use the Distributive property, Aidan would want to rewrite 3 x 20 as 3 x (10 + 10). 10 x 10 is 100.

Fact Fluency

100

2 x 7 =

14

200

7 x 3 =

21

300

9 x 7

63

400

6 x 5 =

30

500

8 x 4

32

Choose a Strategy

100

2 x 50 =

100

200

8 x 60 =

480

300

5 x 30 =

150

400

4 x 40 =

160

500

7 x 60 =

420

Explain it!

100

Explain how to use the Zero Property when multiply 100 x 0?

We know from the Zero property that any number times zero is zero, so 100 x 0 is zero.

200

Explain how to use the Commutative Property to solve 3 x 10.

I know how to count by tens really well, so 3 x10 = 10 x 3, which is 10, 20, 30!

300

Explain how to use place value to solve 4 x 20.

4 x 20 = 4 x 2 tens, which is 8 tens as tens as the product. The answer is 80.

400

Explain how to use the Distributive Property to solve 8 x 30.

8 x 30 = 8 x (10 + 10 + 10) = 80 + 80 + 80 = 240

500

Explain how to use the Associative Property to solve 5 x 40.

5 x 40 = 5 x (10 x 4) = (5 x 4) x 10 = 20 x 10 = 200