Year 4 Maths

Autumn term
Block A
Lesson 2

Spring term
Summer term





How to add mentaly

To add pairs of two-digit numbers together in your head use partitioning to separate the parts of the number then add them back together starting with the tens then adding the units to the tens.


Check your answers using your calculator.


Buy Primary Maths Books here!


Free to use mental addition - ks2 maths resources, activities and worksheets

Copyright 2010. All rights reserved

Mental maths-







Solve using mental addition and partitioning


a) =
b) =
c) =
d) =
e) =