Numeracy problems to solve for Key Stage 1, 2 and 3

The 7 button on your calculator is broken.

Task
Can you find 5 ways of making the number 27 on your calculator?
Find as many different ways you can to make the number 73 on your calculator.
How would you find the total of 13 and 57 on your calculator?

An extra task
Challenge yourself to make other numbers which have a 7 digit in them.
Try making up these numbers with the 5 and 2 keys broken. 10, 25, 56, 50. Choose a different digit key which won't work. Choose some numbers for your friend to make.

Standing by the shop door were five sacks.

Sacks A and B weighed 12kg.
Sacks B and C weighed 13.5kg.
Sacks C and D weighed 11.5kg.
Sacks D and E weighed 8 kg.
Sacks A,C and E together weighed 16kg.

Task
Can you find the weight of each sack?

These problems were sourced by North East Lincolnshire's Numeracy Team

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