Represent a 3-digit number up to 1,000 in different ways

Maths

In this unit pupils will use knowledge of place value to represent a 3-digit number in different ways. They will compare and order 3-digit numbers and position on number lines and unmarked number lines. In the future unit pupils will compare and order 4-digit numbers. They will learn what rounding is and will round 4-digit numbers to the nearest thousand, hundred and ten.

 In the prior unit pupils explored the counting sequence to 100 and beyond representing the numbers from 20-99 in different ways including on a number line They learned to represent 20-99 as a length In this unit pupils will use knowledge of place value to represent a 3-digit number in different ways They will compare and order 3-digit numbers and position on number lines and unmarked number lines

Representing 3-digit numbers, comparing and positioning on number lines

The 100s boundary is the point at which the numbers  change into 100s numbers or from one set of hundreds  to another.

A pattern is a repeated set of numbers, shapes or objects.

Count forwards and backwards within 3-digits

Position means where something is located.

Position 3-digit numbers on number lines

Estimate means finding a value that is close to the answer.

Unmarked means that many of the steps on a number line are not given.

Estimate the position of 3-digit numbers on unmarked number lines

You can compare numbers to find out if one is more than or less than another.

You can order numbers from the smallest to the largest or from the largest to the smallest.

Comparing and ordering numbers with 1, 2 and 3 digits

You compare to find out what is the same and what is different. You compare numbers to find out if one is more than or less than another.

Ordering sets of 3-digit numbers

A known fact is something that you already know  and can use to help you.

A multiple is the result of multiplying a number by  another whole number.

Use known facts to add and subtract multiples of 100 within 1000

An equation is used to show that one number or calculation is equal to another.

Write a 3-digit multiple of 10 as a multiplication equation

Partition means splitting an object or value down into smaller parts.

Partition 3-digit numbers in different ways

Use known facts to solve problems involving partitioning numbers

A multiple is the result of multiplying a number by another whole number.

Use known facts to add and subtract to and from multiples of 100

A mental strategy which uses addition or subtraction to cross a number boundary.

Splitting an object or value down into smaller parts.

The point at which numbers change into 100s numbers, or from one set of hundreds to another.

Add and subtract to and from a 3-digit number bridging 100

Bridging is a strategy which uses addition or subtraction to cross a number boundary.

The 100s boundary is the point at which the numbers change into 100s numbers, or from one set of hundreds to another.

Solve problems by adding and subtracting to or from 3-digit numbers

Count forwards and backwards in multiples of 2, 20, 5, 50 and 25

A pattern is when objects or numbers are arranged following a rule. A pattern is a repeated set of numbers, shapes or objects.

Representing 3-digit numbers, comparing and positioning on number lines

Choose a lesson (15)

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