Step 1 Objective
Describe and extend number sequences: count on or back in tens or hundreds, starting from any two- or three-digit number.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Examples of what pupils should know and be able to do

First with and then without a 1–100 grid:
- Count on in tens from 30; from 26.
- Count on in 40s from 30; from 27.
- Count back in 30s from 160; from 145.