Year 3
Applying a range of strategies to mentally calculate addition
Year 3
Applying a range of strategies to mentally calculate addition
These resources will be removed by end of Summer Term 2025.
Switch to our new teaching resources now - designed by teachers and leading subject experts, and tested in classrooms.
Lesson details
Key learning points
- In this lesson, we will use mental strategies such as partitioning and adjustment to multiples of ten to add a range of two digit numbers together. .
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
Loading...
4 Questions
Q1.
What does the word 'efficient' mean?
To do something badly.
To do something slowly.
Q2.
Which of these is not a strategy for adding efficiently?
Changing the order of the addends to make a calculation easier
Rounding and adjusting
Using doubling and halving
Q3.
When adding 66 and 67 which is an efficient strategy?
Counting on in my head from the largest number
Drawing out a number line
Q4.
When adding 69 and 81 which would be an efficient strategy?
Doubling and halving
Drawing out a number line
Using dienes