How to find number bonds to multiples of 100
To find a missing number bond to different multiples of 100, you can use mental partitioning.
Resources for physically adding numbers together to make multiples of 100 could include: Cuisinaire rods, Numicon, Base 10 or simply use cubes or counters.
Try checking your answers with a calculator.
Suggested guidelines (Year 5) Pupils should be taught to:

Number bonds worksheets  Year 5 Primary maths resources, activities and worksheets
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Complete these number bonds in your head
a) 
= 
b) 
= 
c) 
= 
d) 
= 
e) 
= 