Mental Math
Estimate
Word Problems
Multiply by 1 digit
Multiply by 2 digits
100

7 X 50

350

100

6 X 29

180

100

There are 75 packages.  Each package has 5 shirts.  How many shirts are there?

375

100

23 X 5

115

100

21 x 22

462

200

80 X 40

3,200

200

21 X 79

1,600

200

Barb makes $125 for each house she cleans.  She cleaned 5 houses this week.  How much money did she make?

625

200

68 X 7

476

200

34 X 25

850

300

50 X 60

3,000

300

78 X 32

2,400

300

There are 42 classes in the new school.  Each class has 27 students.  ABOUT how many students are in the school?

1,200

300

132 X 2

264

300

72 X 84

6,048

400

400 X 20

8,000

400

576 X 243

120,000

400

Don works 18 hours each week.  How many hours will Don have worked in 22 weeks?

396

400

567 X 4

2,268

400

322 X 21

6,762

500

700 X 900

630,000

500

521 X 898

450,000

500

Jen hikes 15 miles on each hike.  If she hikes 32 times last month, how many miles did she hike?

480

500

3,678 X 6

22,068

500

457 X 23

10,511