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Which Symbol?

Age 7 to 11
Challenge Level

 

Put in the missing symbols to make these number sentences correct.


Use $+ , -, \times , \div$ and $ =$ .

For example:

 

 

 

 
Try these:

 

 

 


All these number sentences below, except two of them, have two solutions.
Can you find the symbols to use?

 

 

 

 


Which two number sentences have only one answer?
Can you see why this is so?

 

 

 

The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.
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NRICH is part of the family of activities in the Millennium Mathematics Project.