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Bishops Waltham Infant School

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Problem Solving and Reasoning

Look at the challenge below. Can you work systematically to find all of the answers?

How many different answers can you get?

Remember you can use a number line to help with your adding.


Can you change the numbers to make it more challenging? How many different answers can you make now?




What is reasoning in mathematics?


Reasoning mathematically at EYFS is: beginning to explain why (justification) and prove why something does / does not happen (proof).

Look at the pictures below. Can you find the odd one out in each set.

Give reasons as to why you think it is the odd one out. Is there more than one odd one out in each set?

School Illustration