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1000

or '10 cubed' means

Square numbers are the result of squaring of a number.

Example:

9 is a square number because 3 x 3 = 9

70%

Calculator method



Non-calculator method

Make it an equivalent fraction with a denominator of 100 (in this case by multiplying the top and bottom by five).

Just multiply the numerators together and multiply the denominators together.

Example:



And cancel it down if you can - so this would be 

Flip the second fraction and then multiply the 2 fractions together (times the numerators together and times the denominators together).

Example:



*Here we've given our answer as a mixed number too.

A number that you can divide another number by.

Example:
1, 2, 3, 4, 6 and 12 are all factors of 12 because you can divide 12 by all these numbers.

A multiple of a number is any number in that times table.

Example:
Multiples of 10 are 10, 20, 30, 40, 50, ..., ..., ...

Multiples of 4 are 4, 8, 12, 16, 20, 24, ..., ..., ...

Method 1 - Using the percentage button
Simply enter

Method 2 - Change to a decimal first
37% is 0.37 as a decimal so enter...

Either way you should get 155.4

31

Round each number to one significant figure...

9 x 4 - 5 = 36 - 5 = 31

Remember
When the questions says estimate you will not get marks if you just work it out so do what it says - round the numbers first!!!