How to find number bonds up to 20
To find a missing number bond to 20, you can use mental partitioning.
Resources for physically adding numbers together to make 20 could include: Cuisinaire rods, Numicon, Base 10 or simply use cubes or counters.
Try checking your answers with a calculator.
Government guidelines (Year 2)
Pupils should be taught to:
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Number bonds worksheets - Year 2 Primary maths resources, activities and worksheets
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Complete these number bonds in your head