Reason about the location of any two-digit number in the linear number system (1)

Description

Reason about the location of any two-digit number in the linear number system (1)

Pupils need to be able to identify or place two-digit numbers on marked number lines. They should use efficient strategies and appropriate reasoning, including working backwards from a multiple of 10.

Language focus “a is 36 because it is one more than the midpoint of 35.” “b is 79 because it is one less than 80.”