Multiplying and Dividing by 10, 100, 1000

Multiplying and Dividing by 10, 100, 1000

This is all about moving the decimal point

Multiplying by 10, 100, 1000

• When multiplying by 10 we move the decimal point ONE PLACE to the RIGHT (i.e. 145.47 becomes 1454.7)

• When multiplying by 100 we move the decimal point TWO PLACES to the RIGHT (i.e. 23.78 becomes 2378

• When multiplying by 1000 we move the decimal point THREE PLACES to the RIGHT (i.e. 0.1789 becomes 178.9)

Multiple Choice

56.56 multiplied by 10

• 56.56

• 0.5656

• 565.6

• 5656

Multiple Choice

What is 2.56 X 100?

• 0.256

• 256

• 0.0256

Multiple Choice

0.068 x 10

• 6.8

• 0.68

• 68

• 680

Multiple Choice

3.8 X 10

• 0.038

• 0.38

• 38

• 380

Multiple Choice

What number is 10 times as much as 700?

• 7
• 7,000
• 70
• 70,000

Multiple Choice

What is 71.568 x 1000?

• 715.68

• 7156.8

• 71568

• 715680

Multiple Choice

If there are 1000m in a Kilometre, how many metres is 57.75km?

• 577.5

• 5775

• 57,750

• 577,500

Multiple Choice

If there are 100cm in a metre, how many cms is 9.95m??

• 99.5cm

• 995cm

• 9,950cm

• 99,500cm

Dividing by 10, 100, 1000

• When Dividing by 10 we move the decimal point ONE PLACE to the LEFT (i.e. 145.47 becomes 14.547)

• When Dividing by 100 we move the decimal point TWO PLACES to the LEFT (i.e. 231.78 becomes 2.3178)

• When Dividing by 1000 we move the decimal point THREE PLACES to the LEFT (i.e. 1789 becomes 1.789)

Multiple Choice

987.8 divided by 100

• 987.8

• 9.878

• 98.78

• 0.9878

Multiple Choice

466.4 divided by 1000

• 4.664

• 46.64

• 0.4664

• 4664

Multiple Choice

14.08 ÷ 10=

• 1.408

• 140.8

• 14.08

• 1.480

Multiple Choice

753 ÷ 100

• 0.753

• 753

• 75.3

• 7.53

Multiple Choice

What is 19.7 ÷ 10?

• 1.97

• 0.197

• 197

Multiple Choice

If there are 10mm in a centimetre, how many cm is 478mm?

• 4.78cm

• 47.8cm

• 478cm

• 0.478cm

Multiple Choice

If there are 100cm in a metre, how many metres is 54575cm?

• 5.4575m

• 54.575m

• 545.75m

• 5457.5m