3. Choose any 4 numbers, add them up. Find as many ways as possible of making 1500.

1. Choose any 3 numbers, add them up. Find as many ways as possible of making 1000.

2. Choose any 4 numbers, add them up. Find as many ways as possible of making 1000.

4. Find the difference between any 2 numbers. Which pairs have a difference of 175?

5. Find the difference between any 2 numbers. Which pairs have a difference of 123?

6. If each column and row must add up to 256, which number in this table would you need to change?

Term 2b unit 11- Puzzles and problems y5/6 ; Addition and subtraction