Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    4
    ReputationRep:
    Can anyone tell me the best approach to this question:

    a - b ÷ c = d

    The numbers used are 9, 11, 13, 18

    You have to arrange the numbers and add any brackets to make the sentence true.

    I have the answer, but if you had this in an exam how would you approach this to get the answer quickly?
    Offline

    11
    ReputationRep:
    (Original post by AJVarey)
    Can anyone tell me the best approach to this question:

    a - b ÷ c = d

    The numbers used are 9, 11, 13, 18

    You have to arrange the numbers and add any brackets to make the sentence true.

    I have the answer, but if you had this in an exam how would you approach this to get the answer quickly?
    I worked out the division first by planting in the numbers which would divide to produce whole numbers. If in the GCSE you don't get a whole number, you know you will have to put brackets in a and b to then divide by c to produce a whole number.
    • Thread Starter
    Offline

    4
    ReputationRep:
    That's a great answer. Many thanks for your help!

    (Original post by wills21)
    I worked out the division first by planting in the numbers which would divide to produce whole numbers. If in the GCSE you don't get a whole number, you know you will have to put brackets in a and b to then divide by c to produce a whole number.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: February 10, 2018
Poll
Are you going to a festival?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.