Multiplying by Tens, Hundreds, and 1000
Mental Math
Multiplication without Regrouping
Multiplication with Regrouping
100

96 x __ = 960

10

100

8 x 2

16

100

2x342

684

100

159x5

795

200

52 x 100

5200

200

10 x 5

50

200

312 x 3

936

200

279 x 3

837

300

8 x 40

320

300

20 x 20

400

300

201 x 4

804

300

486 x 2

972

400

70 x 20

1400

400

8 x 50

400

400

432 x 2

864

400

199 x 5

995

500

8 x 300

2400

500

9 x 30

270

500

111 x 5

555
500

450 x 2

900