Multiplying Decimals

Multiply Decimal by 1-Digit Whole Number

100

^{2 x 3.5}

7.0 or 7

200

10 x 5.8

58 or 58.0

300

9 x 7.7

69.3

400

4 x 9.1

36.4

500

3 x 9.1

27.3

Multiply Decimal by 2-Digit Whole Number

100

0.067 x 34

2.278

200

5.3 x 80

424.0 or 424

300

4.2 x 76

319.2

400

0.40 x 83

33.2 or 33.20

500

78.8 x 46

3624.8

Multiply Decimal by Decimal

100

2.3 x 4.6

10.58

200

0.67 x 0.50

0.3350

300

3.3 x 0.89

2.937

400

6.7 x 0.95

6.365

500

1.2 x 0.54

0.648

Multiply Decimal with Zeros in the Product

100

0.1 x 0.7

0.07

200

0.3 x 0.4

0.12

300

0.09 x 0.7

0.063

400

0.06 x 0.9

0.054

500

0.8 x 0.1

0.08

Multiply by 10,100 or 1,000

100

How does the decimal point move when you multiply 816.79 x 10⁴?

It moves 4 places to the right.

200

59.67 x 0.01

0.5967

300

432.967 x 10⁴

4,329,670

400

7941.538 x 0.001

7.941538

500

How does the decimal point move when you multiply 54.87 x 10¹?

It moves 1 place to the right