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  1. Maths
  2. Year 4
  3. Mental Maths
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Use Inverse Operation to Total 1,000

In this worksheet, students will use subtraction to find the missing number to make the total 1,000.

'Use Inverse Operation to Total 1,000' worksheet

Key stage:  KS 2

Year:  Year 4 Maths worksheets

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Use Correct Methods to Problem Solve

Difficulty level:  

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Worksheet Overview

In this activity, we will be finding the missing number to make the total of 1,000.

 

Example

Find the number that makes the calculation correct.

380 + __ =  1,000

 

Answer

The opposite (inverse) of adding is subtracting.

So we work out 1,000 - 380

We can do this in stages 1,000 - 300 = 700

700 - 80 = 620

 

Does that make sense?

Let's practise this in the following questions.

 

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