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

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

Which of these numbers are multiples of a hundred? 

Which known fact could you use to help you calculate 500 + 300? 

Which pairs of numbers are equal to 600? 

What is the value of the missing part in the bar model? 

Which pairs of numbers could be used to complete the bar model? 

What is the missing number? {{ }} + 10 = 120

Which pair of numbers do not add up to equal 90? 

This lesson will soon be taken down.

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

Lesson outcome