Unit 10 Review

How can you solve the expression two ways? Fill in the blanks.

Which of the following shows a correct way to decompose 90 x 5?

• 10 + 9 x 5

• 10 x 9 + 5

• 10 x 9 x 5

• 10 + 9 + 5

During the first 7 hours of a snowstorm, a weather station recorded 4 inches of snow each hour. Before the snowstorm ended, 12 more inches of snow fell. How many inches of snow fell?

• 11 inches

• 23 inches

• 40 inches

• 55 inches

Suri practices soccer 5 days each week for 48 minutes a day. She stretches a total of 31 minutes each week. She estimates the total number of minutes she practices and stretches each week.

What mistake did she make?

• She should have added 40 + 31 in Step 2.

• She does practice and stretch about 231 minutes a week.

• She needs to round 48 to 50 in Step 1.

Which of the following correctly shows how to find the product of 4 x 60? Choose all that apply.

Sehrish and Gary are planting a garden. They are buying 4 packages of tulip bulbs for $7 each. Sehrish and Gary split the cost equally between the 2 of them when checking out. How much money does each pay?

• $13

• $14

• $26

• $30

Which products are EVEN and which products are ODD?

James puts yogurts on shelves at the supermarket. He puts 10 rows of 4 yogurts on each shelf. He puts yogurt on 3 shelves.

How many yogurts does James put on the shelves in all?

• 30 yogurts

• 40 yogurts

• 70 yogurts

• 120 yogurts

How can you use place value to multiply? Fill in the blanks.

Aldo is setting vases in a display case at a craft show. He places vases in 5 rows with 9 vases in each row. He sells 21 of the vases.

How many vases are left in the display case?