Beginner · 8 min
Adding and multiplying
Break everyday calculations into manageable parts.
Add in parts
Split a number into tens and ones, then add each part. This makes mental arithmetic easier.
Worked example
28 + 17 = 28 + 10 + 7 = 45
Multiply equal groups
Multiplication adds the same quantity repeatedly. Four packs of six contain twenty-four items.
Worked example
4 × 6 = 6 + 6 + 6 + 6 = 24
Try it on paper
- Write down each step before entering your answer.
- Use the explanation to check your method, then try the next question.