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

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 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? 

What number is represented by the arrow? 

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?

Starter Quiz