Ch. 3 Test Prep

Solve 30 x 80.

• 2,200

• 240

• 2,400

Mr. Bum's class is taking a field trip to the planetarium. The trip will cost $27 for each student. There are 18 students in his class.

Round each factor to estimate the total cost of the field trip.

• $200

• $600

• $400

Mr. Brown's class is taking a field trip to the planetarium. The trip will cost $27 for each student. There are 18 students in his class.

Solve for the total cost of the field trip.

• $486

• $478

• $480

True or False

75 x 10 = 750

• True

• False

True or False

14 x 20 = 280

• True

• False

True or False

60 x 30 = 180

• True

• False

True or False

50 x 50 = 2,500

• True

• False

True or False

14 x 30 = 700

• True

• False

There are 28 boxes of pens in Mr. Gardner's supply cabinet. Each box contains 100 pens. How many pens are in the supply cabinet?

• 2,000

• 280

• 2,800

• 2,080

Round each factor & choose which 2 factors you would multiply to find an estimate.

26 x 37

• 50 x 20

• 30 x 40

• 30 x 30