1. Number and place value

Lesson

When we count by ones, we use the digits 0,\,1,\,2,\,3,\,4,\,5,\,6,\,7,\,8 and 9.

We also use these digits to make bigger numbers, like 10,\,11,\,12, and 13.

Idea summary

When we count by ones we use single digits, for numbers bigger than 9 we can use more digits.

Let's see how we can use icy pole sticks and place value blocks to work out how to write larger numbers.

Think about how many hundreds and tens blocks fit into 110.

Worked Solution

Idea summary

We can use blocks of hundreds, tens, and ones to represent numbers and place value.

Let's see how each place value is tens times larger than the one to its right, using place value blocks for ones (units), tens, hundreds and thousands.

What number is represented by these blocks?

Worked Solution

Idea summary

We can use models like these to help us work out the value of our digits.

applies place value to order, read and represent numbers of up to five digits