Math Topic 6 Review

Arrays

100

Which equation shows the number of x's in the array?

x x x x x x

x x x x x x

x x x x x x

3 x 6 = 18

200

Which equation shows the number of x's in the array?

x x x x x x x x x x

x x x x x x x x x x

x x x x x x x x x x

x x x x x x x x x x 

4 x 10 = 40

300

Create an array for 3 x 7.

x x x x x x x

x x x x x x x

x x x x x x x

400

Create an array for 5 x 6.

x x x x x x

x x x x x x

x x x x x x

x x x x x x

x x x x x x

500

Create an array for 8 x 9.

x x x x x x x x x

x x x x x x x x x

x x x x x x x x x

x x x x x x x x x

x x x x x x x x x

x x x x x x x x x

x x x x x x x x x

x x x x x x x x x 

Zeroes

100

What is 10 x 300?

3,000

200

What is 4 x 2,000?

8,000

300

Complete this statement. To find 3 × 800, multiply 3 and 8. Then write _____ zeros at the end.

2

400

Edgar wrote a whole number ending in 4 zeros. If he multiplies the number by 10, how many zeros should be in the product?

5

500

Find the product of 7 and 80.

560

Breaking Apart

100

In 2 x 49, how can you break apart the 49 to make it easier to solve?

40 and 9

200

How could you break this equation apart to make it easier to solve?

4 x 45

4 x 40 and 4 x 5

300

Which is the same as 7 × 57?

A.35 + 49

B.350 + 49

C.350 + 490

D.7 + 57

400

What partial products will help you find the product 4 × 205?

4 x 200 and 4 x 5

500

Which addition sentence shows how to use partial products to find 2 × 28?

4 + 16 = 20

Multiplication

100

What is 2 x 4?

8

200

What is 3 x 26?

78

300

What is 9 × 62?

578

400

A school has 6 fourth-grade classrooms and each classroom has 28 students. What equation will help you find out how many 4th grade students there are?

6 x 28

500

What is 6 x 28?

168