Into Math Module 8 Review

Mr. Parker cleans 35 classrooms. There are 24 chairs in each classroom that must be stacked each day. How many chairs are there in all?

• 845 chairs

• 840 chairs

• 940 chairs

• 945 chairs

Mrs. Brown's class watches snowflakes falling. We see 73 flakes fall every minute for 15 minutes. How many snowflakes did we see?

• 995 snowflakes

• 1,100 snowflakes

• 1.000 snowflakes

• 1,095 snowflakes

Mrs. Mills drives the bus 28 miles each day for 21 days. The last time she drives an additional 12 miles. Mrs. Mills finds the number of miles she drives for the 21 days. If Mrs. Mills uses rounding to check whether her is answer is reasonable, which equation does she use?

• 20 × 20 + 10 = 410

• 30×20+10=610

• 40×20+20=820

• 30 × 30 + 20 = 920

The area model shows the product of two factors. What are the two factors? Select the two correct answers.

• 10

• 12

• 15

• 20

• 22

The area model shows part of the products of two numbers. What numbers will correctly complete the model?

• 3, 30, 360

• 4, 40, 430

• 4, 10, 320

• 3, 40, 360

28 x 47

• 2.316

• 1,316

• 1,300

• 1,315

40 x 78

• 3,120

• 4,120

• 3,320

• 4,420

63 x 87

• 4,481

• 6,481

• 5,481

• 7,481

18 × 40 = (___ × 40) + (8 × ____) = 400 +____ = _______

What numbers will complete the equation?

• 10, 30, 420, 730

• 10, 0, 0, 400

• 10, 40, 320, 720

What multiplication equation 12 does the area model show?

• 20 x 30 x 6 x 8= 1,008

• 600 x 48 = 1,008

• 28 x 36 = 1,008