Multiplying Whole Numbers

Estimating: 1-digit

100

Estimate 87x 4

What is 320

200

Estimate 278 x 9

What is 2700

300

Estimate 679 x 2

What is 1400

400

Estimate 890 x 4

What is 3600

500

Estimate 7089 x 5

What is 35000

Estimating Products: lots o'digits

100

Estimate the product of 50 x 101

What is 50000

200

Estimate the product of 99 x 99

What is 10,000.

300

Estimate the product of 70 x 27

What is 2,100

400

Estimate the product of 478 x 29

What is 15,000

500

Estimate the product of 6978 x 567

What is 42000

Multiplying by 1-digit numbers

100

29 x 4 =

What is 116

200

31 x 7 =

What is 217

300

102 x 8 =

What is 816

400

643 x 7 =

What is 4,501

500

Miss Johns made 5 pies and wants to sell them for $36 each. How much money will she makes if she sells them all?

What is $180

Multiplying by 2-digit Numbers

100

38 x 12 =

What is 456

200

45 x 76 =

What is 3,420

300

64 x 51 =

What is 3,264

400

53 x 46 =

What is 2,438

500

The students put together 12 jigsaw puzzles. Each puzzle had 34 pieces. How many puzzles pieces did they have in all?

What is 408 puzzle pieces

Multiplying by 3-digit numbers...and beyond!

100

234 x 100

What is 23,400

200

456 x 103

What is 46,968

300

876 x 870

What is 762,120

400

4987 x 145

What is 723,115

500

1500 x 2345

What is 3,517,500