Lesson

Do you remember how to count forward by 10?

What is 20 + 10?

Worked Solution

Idea summary

To add numbers we can use a place value table.

Let's see how we can count on by 1, and then 2. What patterns do we make?

Write the next number in the pattern:

1,\,3,\,5,\,7,\,9,\, 11,\,⬚

Worked Solution

Idea summary

When we count on by 1, and then 2, we can make patterns of odd or even numbers.

What patterns do you see if we count by 5, or 10?

Write the next number in the pattern:

3,\,8,\,13,\,18,\,23,\, 28,\, ⬚

Worked Solution

Idea summary

When we count on, we can use the pattern to help us work out the next number.

uses mental and written strategies for addition and subtraction involving two-, three-, four and five-digit numbers

generalises properties of odd and even numbers, generates number patterns, and completes simple number sentences by calculating missing values