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

Maths

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

Count forwards and backwards within 3-digits

Position 3-digit numbers on number lines

Comparing and ordering numbers with 1, 2 and 3 digits

Ordering sets of 3-digit numbers

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

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

Partition 3-digit numbers in different ways

Use known facts to solve problems involving partitioning numbers

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

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

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

Solve problems by counting forwards and backwards in multiples of 2, 20, 5, 50 and 25

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

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 arrow shows the position of a number. Which number?

Which of these is the best estimate for the number shown by the arrow on this number line?

Which arrow represents the position of 125?

What number is halfway between 0 and 100? 

What number is halfway between 100 and 200? 

Sofia is thinking of a 10s number that could be represented on the number line. The digits of the number add up to 6. What is the number?

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

Lesson outcome