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

Rounding to the nearest 10/100/1000

100

156 to the nearest 100

200

200

19 to the nearest 10

20

300

2142 to the nearest 1000

2000

400

4 500 000 to the nearest million

5 000 000

500

67 000 000 to the nearest billion

1 000 000 000

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

Random

100

Which colour starts first in chess

White

200

Which country produces the most coffee in the world?

Brazil

300

Which is the most expensive home in the world?

Buckingham Palace

400

What is the highest mountain in Africa?

Mt Kilimanjaro

500

What is the capital of Cambodia?

Phnom Penh