How to solve basic arithmetic

Math & Logic

Work fast, accurate calculations with whole numbers, fractions, and decimals.

Worked examples

Answers shown

Follow the steps on real items before you practise.

Example 1Difficulty 1

47 + 68 = ?

Answer: C. Here is why:

47 + 68 = 115.

Example 2Difficulty 2

If 3x = 51, what is x?

Answer: C. Here is why:

Divide both sides by 3: x = 51 / 3 = 17.