4th Grade Multiplication & Division

Estimate Multiplication

100

4x33 

120

200

5x491

2500

300

Write the equation you would use to estimate 5 x 273

5x300

400

Estimate 8x4,519

40,000

500

Estimate 6x9,231

72,000

Multiples of 10

100

5x90

450

200

3x800

2400

300

7x4,000

28,000

400

600x6

3600

500

2x4x800

6,400

Estimate Division

100

Estimate 322/4

What is 80

200

Estimate 6490/8

800

300

Estimate 3591/7

What is 500

400

Estimate 94/3

30

500

Michael has 342 stickers. He puts them into 5 piles. About how many stickers are in each pile? A. About 5 B. About 60 C. About 70 D. About 80

What is C. About 70

Dividing by Multiples of 10

100

56/8

7

200

560/8

70

300

5600/8

700

400

300/5

60

500

72000/9

8000

Surprise

100

33/3

11

200

Estimate 6x479

3000

300

Estimate 3691/5

700

400

Use mental math to solve 12x50

600

500

Amanda works after school from 4:00 pm - 7:00 pm. She earns $12 per hour. If she works three days a week, how much does she earn?

What is $108