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Using Brackets on the Calculator to Work Out the Value of Combined Operations

In this worksheet, students use brackets on the calculator to work out the value of combined operations.

'Using Brackets on the Calculator to Work Out the Value of Combined Operations' worksheet

Key stage:  KS 3

Curriculum topic:  Number

Curriculum subtopic:  Use Calculators/Technology for Accuracy

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

In this worksheet, we will learn how to use brackets on the calculator to work out the value of combined operations.

 

Example


766 - (-62.2)
-212 + 43.3
  =  
 
 

 

Method

Put brackets around the (top) and brackets around the (bottom).

 

On your calculator, key in the following:

( 766 - ( -62.2 ) ) ÷ ( -212 + 43.3 ) =

 

Answer

 

766 - (-62.2)
-212 + 43.3
  =       -4.91 (to 2 dps)

 

Work out:

  78.4 - (50.2 + 8)2   =  
 

Work out:

  75 - (60.1 + 6)2   =  
 

Work out:

-38 × (-7.81)2
5.07 + 37
  =  
 

 

(Give your answer to 1 decimal place)

Work out:

436 - (-17.8)
-101 + 10.7
  =  
 

 

(Give your answer to 2 decimal places)

Work out:

  21.2 - (70.2 + 3)2   =  
 

Work out:

-59 × (-8.31)2
7.21 + 96
  =  
 

 

(Give your answer to 2 decimal places)

Calculate:

227 - (-35.1)
-932 + 81.3
  =  
 

 

(Give your answer to 2 decimal places)

Calculate:

-45 × (-5.15)2
-8.51 - 51
  =  
 

 

(Give your answer to 2 decimal places)

Work out:

235 - (-29.1)
-463 + 26
  =  
 

 

(Give your answer to 1 decimal place)

Work out:

232 - (-2.1)
-46 + 2.6
  =  
 

 

(Give your answer to 1 decimal place)

  • Question 1

Work out:

  78.4 - (50.2 + 8)2   =  
 
CORRECT ANSWER
-3308.84
  • Question 2

Work out:

  75 - (60.1 + 6)2   =  
 
CORRECT ANSWER
-4294.21
  • Question 3

Work out:

-38 × (-7.81)2
5.07 + 37
  =  
 

 

(Give your answer to 1 decimal place)

CORRECT ANSWER
-55.1
  • Question 4

Work out:

436 - (-17.8)
-101 + 10.7
  =  
 

 

(Give your answer to 2 decimal places)

CORRECT ANSWER
-5.03
  • Question 5

Work out:

  21.2 - (70.2 + 3)2   =  
 
CORRECT ANSWER
-5337.04
  • Question 6

Work out:

-59 × (-8.31)2
7.21 + 96
  =  
 

 

(Give your answer to 2 decimal places)

CORRECT ANSWER
-39.48
  • Question 7

Calculate:

227 - (-35.1)
-932 + 81.3
  =  
 

 

(Give your answer to 2 decimal places)

CORRECT ANSWER
-0.31
  • Question 8

Calculate:

-45 × (-5.15)2
-8.51 - 51
  =  
 

 

(Give your answer to 2 decimal places)

CORRECT ANSWER
20.06
  • Question 9

Work out:

235 - (-29.1)
-463 + 26
  =  
 

 

(Give your answer to 1 decimal place)

CORRECT ANSWER
-0.6
  • Question 10

Work out:

232 - (-2.1)
-46 + 2.6
  =  
 

 

(Give your answer to 1 decimal place)

CORRECT ANSWER
-12.2
---- OR ----

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