Skip to content
Oak National Academy
Oak National Academy
Teachers
Pupils
Change unit

Addition and subtraction

Year 3 • Maths
We've put the lessons in order helping you build on what you've learned before so it’s best to start with the first lesson of a unit.

Choose a lesson (15)

These lessons will be removed by end of Summer Term 2025.

We've made brand-new and improved lessons for you.
View new lessons
1
Adding and subtracting 1-digit numbers to/from 3-digit numbers
2
Adding multiples of 10 to 3-digit numbers
3
Subtracting multiples of 10 from 3-digit numbers
4
Adding and subtracting multiples of 100 to/from 3-digit numbers
5
Adding two 3-digit numbers (without regrouping)
6
Subtracting two 3-digit numbers (without regrouping)
7
Applying rounding for estimating (adding)
8
Applying rounding for estimating (subtracting)
9
Adding two 3-digit numbers (regrouping in one column)
10
Adding two 3-digit numbers (regrouping in multiple columns)
11
Subtracting 3-digit numbers (regrouping tens to ones)
12
Subtracting 3-digit numbers (regrouping hundreds to tens)
13
Subtracting 3-digit numbers (regrouping in multiple columns)
14
Solving addition and subtraction word problems
15
Solving word problems with unknown values