### Subtraction

### Subtraction - Mental Strategies and Drills

Grade 1- One less than (problem solving)
- Take away
- Subtraction Problems
- Take away (subtraction symbol)
- Take away from 10 (ten frame)
- How many left - problem solving
- Number lines – identifying subtraction
- Number line - subtracting single digit numbers (<10)
- Subtracting 2
- Subtraction - numbers under 10
- Subtracting 2 (problem solving)
- Subtracting from 10
- Subtraction from 10
- Add to make 10
- Subtraction (problem solving) numbers less than 10
- Subtracting single digit numbers (pictures)