1.03 Order numbers

Lesson

Before we try and order 5-digit numbers, make sure you know how to read and write them.

Write the following using numerals:

1. fifty thousand, five hundred and fifty five

Learn

Let's use a number line to order 5 digit numbers.

Apply

Question 1

We want to work out which of three numbers is the largest.

1. Select the correct plot of $41590$41590$41690$41690 and $41490$41490 on a number line.

A

B

C

A

B

C
2. Write the three numbers from smallest to largest.

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Learn

This time we will see how to use a place value table to order 5 digit numbers.

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Question 2

Order these numbers from largest to smallest.

1. $60679,70966,70669$60679,70966,70669

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2. $95036,90536,95306$95036,90536,95306

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Remember!

To determine the largest or smallest number in a pair, or set, of numbers, we can compare the furthermost left place value digits. If they are the same, we move to the right, one place at a time, until they are different.

We can also use the 'greater than' (>) or 'less than' (<) symbol to compare two numbers, remembering that the 'greater than' sign has the big part towards the larger number, and the 'less than' symbol has the small part towards the smaller number.

Outcomes

MA2-4NA

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

MA2-5NA

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