3rd Grade Math Mixed Review

Create an area model to multiply 45 x 68. Which partial products do you get?

• 2400 + 30 + 320 + 40

• 240 + 300 + 32 + 40

• 2400 + 300 + 320 + 40

• 240 + 300 + 320 + 40

In your area model for 45 x 68, what is the final product?

• 2,790

• 3,060

• 612

• 900

Break the dividend 78 down into numbers most easily divisible by the divisor 4 with the final remainder added at the end: 78 / 4

• 40 + 36 + 2 = 19 r 2

• 60 + 18 = 19

• 48 + 20 + 8 = 19

• 40 + 32 + 1 = 18 r 1

Which are the factors of 12?

• 1, 2, 3, 4, 6, 10, 12

• 1, 2, 3, 4, 12

• 1, 2, 3, 4, 6, 12

• 1, 3, 4, 6, 12

What are the first 5 multiples of 14?

• 14, 28, 56, 70, 84

• 14, 28, 46, 52, 70

• 14, 28, 42, 56, 60

• 14, 28, 42, 56, 70

Solve this problem on scrap paper: 20,045 - 829.

What is 6 x 2/3? Simplify.

If a rectangle has a perimeter of 32 feet and its length is 12 feet, what is the width in feet?

Can a square have a perimeter of 48 ft?

• Yes, because 6 x 8 = 48.

• Yes, because 12 + 12 + 12 + 12 = 48.

• No because nothing times itself = 48.

• No because there can't be an area of 48 so it can't be the perimeter either.

Katelyn ate some cookies. Graham at twice as many as Katelyn. William ate 1/4 as many as Graham. There were 28 cookies in all. How many did Katelyn eat?

• 4 cookies

• 7 cookies

• 8 cookies

• 10 cookies