Mixed Addition and Subtraction to 20
Mixed Addition and Subtraction to 20 helps children practise switching between + and - while solving within 20. Read the short guide and look through the examples before choosing online practice or a printable worksheet.
How to solve this
- Look at the sign before you calculate.
- For +, count on or make 10.
- For -, count back or return to 10 first.
Examples
12 + 5 = ?
17
18 - 7 = ?
11