The smart way to improve grades

Comprehensive & curriculum aligned

Affordable pricing from £10/month

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:  

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
EDDIE SAYS
You need to put one extra set of brackets here to show that you have to square before you subtract

78.4 - ((50.2 + 8)2)

  • Question 2

Work out:

  75 - (60.1 + 6)2   =  
 
CORRECT ANSWER
-4294.21
EDDIE SAYS
You need to put one extra set of brackets here to show that you have to square before you subtract

75 - ((60.1 + 6)2)

  • Question 3

Work out:

-38 × (-7.81)2
5.07 + 37
  =  
 

 

(Give your answer to 1 decimal place)

CORRECT ANSWER
-55.1
EDDIE SAYS
Don't forget you need to divide all of the top by all of the bottom. You need to put brackets around the entire numerator and the entire denominator
  • Question 4

Work out:

436 - (-17.8)
-101 + 10.7
  =  
 

 

(Give your answer to 2 decimal places)

CORRECT ANSWER
-5.03
EDDIE SAYS
Don't forget you need to divide all of the top by all of the bottom. You need to put brackets around the entire numerator and the entire denominator
  • Question 5

Work out:

  21.2 - (70.2 + 3)2   =  
 
CORRECT ANSWER
-5337.04
EDDIE SAYS
You need to put one extra set of brackets here to show that you have to square before you subtract

21.2 - ((70.2 + 3)2)

  • Question 6

Work out:

-59 × (-8.31)2
7.21 + 96
  =  
 

 

(Give your answer to 2 decimal places)

CORRECT ANSWER
-39.48
EDDIE SAYS
Don't forget you need to divide all of the top by all of the bottom. You need to put brackets around the entire numerator and the entire denominator
  • Question 7

Calculate:

227 - (-35.1)
-932 + 81.3
  =  
 

 

(Give your answer to 2 decimal places)

CORRECT ANSWER
-0.31
EDDIE SAYS
Don't forget you need to divide all of the top by all of the bottom. You need to put brackets around the entire numerator and the entire denominator
  • Question 8

Calculate:

-45 × (-5.15)2
-8.51 - 51
  =  
 

 

(Give your answer to 2 decimal places)

CORRECT ANSWER
20.06
EDDIE SAYS
Don't forget you need to divide all of the top by all of the bottom. You need to put brackets around the entire numerator and the entire denominator
  • Question 9

Work out:

235 - (-29.1)
-463 + 26
  =  
 

 

(Give your answer to 1 decimal place)

CORRECT ANSWER
-0.6
EDDIE SAYS
Don't forget you need to divide all of the top by all of the bottom. You need to put brackets around the entire numerator and the entire denominator
  • Question 10

Work out:

232 - (-2.1)
-46 + 2.6
  =  
 

 

(Give your answer to 1 decimal place)

CORRECT ANSWER
-12.2
EDDIE SAYS
Don't forget you need to divide all of the top by all of the bottom. You need to put brackets around the entire numerator and the entire denominator
---- OR ----

Sign up for a £1 trial so you can track and measure your child's progress on this activity.

What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Get started
laptop

Start your £1 trial today.
Subscribe from £10/month.