Numbers of any Magnitude Revision

Rounding Decimals

100

Round 4.10 to 1 decimal place

4.1

200

Round 1.56321 to 2 decimal places

1.56

300

Round 0.2543 to 2 decimal places

0.25

400

Round 1.0456231 to 3 decimal places

1.046

500

Round 39.999 to 2 decimal places

40.00

Multiplying and Dividing by 10/100/1000

100

7 x 10

70

200

850 divided by 100

8.5

300

15.767 x 1000

15 767

400

245.321 divided by 1000

0.245321

500

76.82 x -10

-768.2

Scientific Notation (Big Numbers)

100

40,000 in scientific notation

4.0 x 10⁴

200

1,500,000 in scientific notation

1.5 x 10⁶

300

79472.645 in scientific notation

7.9472645 x 10⁴

400

Convert 5 x 10⁶ into a whole number

5,000,000 or 5 million

500

Convert 75.4392 x 10² into a whole number

7543.92

Scientific Notation (Small Numbers)

100

0.07 in scientific notation

7 x 10^-2

200

0.0000432 in scientific notation

4.32 x 10^-5

300

0.00000054367 in scientific notation

5.4367 x 10^-7

400

Convert 4.23 x 10^-3 into a whole number

0.00423

500

Convert 0.000832 x 10^-3 to a whole number

0.000000832

Prefixes

100

The number of grams in a kilogram

1000

200

The next biggest unit after a gigabyte

Terabyte

300

The unit that is smaller than a centimetre

Millimetre

400

How you would convert from litres to kilolitres

Dividing by 1000

500

The prefix that means 1 billionth of a unit

Nano