## Handy Counters

### Model subtraction in a way in which you can see the removed amount.

- Y1: read, write and interpret mathematical statements involving addition (+), subtraction (−) and equals (=) signs
- Y1: represent and use number bonds and related subtraction facts within 20
*(this resource only goes up to 12)*
- Y1: add and subtract one-digit and two-digit numbers to 20, including 0
- Y1: solve one-step problems that involve addition and subtraction, using concrete objects and pictorial representations, and missing number problems such as 7 = ? − 9
- Y2: add and subtract numbers using concrete objects and mentally, including:
- a two-digit number and 1s

- Y2: show that addition of 2 numbers can be done in any order (commutative) and subtraction of 1 number from another cannot
- Y2: recognise and use the inverse relationship between addition and subtraction and use this to check calculations and solve missing number problems

This is intended as a whole-class teaching tool.

Give each pair of children a drywipe board. Can you write a Maths Story? Would it be + or -?

WEDYK? (What else do you know?)
Now write a missing number Maths Story?