Missing Signs
This QuickQuestion Interface © is a little bit different to many of the others. A sum is generated, and the answer given, but all the + - x and ÷ signs have been removed. Can you work out what they were? It is based on an idea from 7puzzleblog.com, which is well worth a visit too.
Ideas for Teachers
This activity is an excellent puzzle that can be used as a starter to any lesson. You can choose whether you want to work left right or using the correct order of operations, and there is also a hint which gives the first of the missing signs. The ones with three numbers are fairly easy, and suitable for Key Stage 2 mainly, but the 4 and 5 number versions can be more challenging.
This activity is an excellent puzzle that can be used as a starter to any lesson. You can choose whether you want to work left right or using the correct order of operations, and there is also a hint which gives the first of the missing signs. The ones with three numbers are fairly easy, and suitable for Key Stage 2 mainly, but the 4 and 5 number versions can be more challenging.
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