Estimate and use inverse operations to check answers to a calculation

A new resource to help teach this objective will be added soon.

New Maths Curriculum (2014): Year 4 objectives.

 
Inverse Operations - Addition and Subtraction Inverse Operations - Addition and Subtraction

I designed this resource to help children to visualise the relationship between addition and subtraction. They can then use this relationship to solve missing number problems. There are a wide range of levels, from adding within 20 to using a calculator to add and subtract 5 digit numbers and decimals.