Description
Children find the missing number through addition and/or subtraction up to 20. A number line 1-20, at the top of each card helps children to find the correct answer.
ISBN: 0-86174-935-9
£15.00
Children find the missing number through addition and/or subtraction up to 20. A number line 1-20, at the top of each card helps children to find the correct answer.
ISBN: 0-86174-935-9