UKUK USUSIndiaIndia

Every Question Helps You Learn

Join Us
Streak
Leading Streak Today 0
Your Streak Today 0
Streak
Leading Streak Today
0
Your Streak Today
0

Estimation in Arithmetical Calculations (F)

As we delve into the art of estimation in mathematical calculations, we're adding an intriguing dimension to our revision session with a captivating video comparison. Join us as we explore the differences between the mass and volume of both mercury and water.

When performing calculations, it’s always good to carry out a common-sense check and have a rough idea of the answer. This is true even if you are working with a calculator, as it is easy to mis-type an entry! Put your estimating and approximation skills to the test in this GCSE Maths quiz.

Approximating is all about making the calculation easier, by rounding each number to 1 significant figure. Very often, you will then be able to do it in your head. Things can get a little bit trickier when division is involved – ideally, you want both the numerator and denominator to have a common factor, so that one is a multiple of the other and it will cancel down.

Working out an approximate answer will give you an indication of the size of the answer (this is often called the ‘ball park figure’).

If your approximation tells you the answer is in the hundreds, but your proper calculation gives an answer smaller than 1, then you know you have gone wrong somewhere. Engineering disasters have resulted from errors in calculations, so it is important to get it right!

Look for everyday opportunities to practise your estimating skills – what’s the total of your shopping basket, how much change would you get from a £20 note, how many MP3 downloads can I get from a £5 voucher… the list is endless!

Question 1
Helpful comment
Question 2
Helpful comment
Question 3
Helpful comment
Question 4
Helpful comment
Question 5
Helpful comment
Question 6
Helpful comment
Question 7
Helpful comment
Question 8
Helpful comment
Question 9
Helpful comment
Question 10
Helpful comment
You can find more about this topic by visiting BBC Bitesize - Approximation

Author:  Frank Evans

© Copyright 2016-2024 - Education Quizzes
Work Innovate Ltd - Design | Development | Marketing