Estimate the answer to a calculation and use inverse operations to check answers

New Maths Curriculum (2014): Year 3 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.

Placing Calculations on a Number Line Placing Calculations on a Number Line

Place the answer to calculations on a number line. An enormous array of choice. Addition, subtraction, multiplication and division. Ranging from adding numbers to 10 to multiplying 4 digit numbers. Great for combining teaching calculations and approximations with developing an understanding of place value.

For more resources involving partitioning and place value click here.

For more addition and subtraction resources click here.

For more multiplication and division resources click here.