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Mental Calculations (2)

In this worksheet, students perform mental calculations with mixed operations involving some large numbers.

'Mental Calculations (2)' worksheet

Key stage:  KS 2

Curriculum topic:   Number: Addition, Subtraction, Multiplication and Division

Curriculum subtopic:   Perform Mental Calculations

Difficulty level:  

Worksheet Overview

In this worksheet, follow the instructions in the given order to get to the final answer.

All calculations should be done mentally.

Know all times tables up to 12 as well as division, addition and subtraction facts.

 

Example 1

30 → × 4+ 20÷ 7 → ?

 

Answer

We start with 30 × 4 = 120.

Then 120 + 20 = 140.

Then 140 ÷ 7 = 20.

 

Example 2

1320 → ÷ 110+ 60× 2÷ 12 → ?

 

Answer

We start with 1320 ÷ 110.

This is the same as 132 ÷ 11 = 12.

Then 12 + 60 = 72.

Then 72 × 2 = 144.

Then 144 ÷ 12 = 12.

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