Number Lines

A resource to try once children are familiar with number lines, and they have begun to use them for addition. It could be a good way to talk about subtraction. Leah and Tom each have a number line. Can you work out where their counters will land?
Exploring and noticing Working systematically Conjecturing and generalising Visualising and representing Reasoning, convincing and proving
Being curious Being resourceful Being resilient Being collaborative

Problem

Number Lines printable sheet

Leah and Tom both have number lines and a counter. They always start with their counters at zero.

Leah's number line goes along from left to right like this:

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Number Lines



First Leah made a jump of three along her number line and then a jump of four. Where did she land?

Next Leah made a secret jump along her number line. Then she made a jump of five and landed on $9$.

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Number Lines



How long was her secret jump?

Then Leah made a jump of six and another secret jump. She landed on $10$.

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Number Lines



How long was her second secret jump?

Tom's number line goes up and down like this:

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Number Lines



First Tom made a jump of three up his number line and then a jump of two. Where did he land?

Next Tom made a secret jump up his number line. Then he made a jump of six and landed on $8$.

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Number Lines



How long was his secret jump?

Then Tom made a jump of four and another secret jump. He landed on $7$.

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Number Lines



How long was his second secret jump?

There are some printable NRICH Roadshow resources for the game that this task is based on: Instructions and Number Line.