This resource teaches children to use the subtraction symbol within 20, without crossing 10. The use of 0 is also explored. There is a teaching presentation accompanied by differentiated activities with a range of fluency, reasoning and problem-solving questions.
National Curriculum Objectives:
Mathematics Year 1: 

represent and use number bonds and related subtraction facts within 20
add and subtract one-digit and two-digit numbers to 20, including zero
solve one-step problems that involve addition and subtraction, using concrete objects and pictorial representations, and missing number problems

Differentiation:
There are three levels of differentiation in this pack: ‘working towards,’ ‘expected’ and ‘greater depth’.

Level of this Pack:
Age: 5-6...