Multiplying different ways

powers of 10

100

10⁴ x 10⁵

1000000000/ 10⁹

200

20 x 10⁸

2000000000

300

40 x 10⁹

40000000000

400

60 x 10⁶

60000000

500

80 x 10⁷

800000000

multiplying fractions

100

1/2 x 34

17

200

8/1 x 21

168

300

7/2 x 44

154

400

8/2 x 6

24

500

6/4 x 27

40.5

multiplying decimals

100

7x4.5

31.5

200

9 x 16.8

151.2

300

11x3.49

38.39

400

66x6.5

429

500

94 x 64.5

6063

Multiplying by 20's

100

26 x 15

390

200

29 x 17

493

300

24 x 43

1032

400

23 x56

1288

500

23 x 456

10488

multiplying

100

984 x 5654

5563536

200

696 x 6

4176

300

867 x 764863

663136221

400

45 x33

1485

500

7678 x 655

5029090