Maths

>

KS3

Numbers

Question

Order of Operation Calculator

2 years ago

·

43 Replies

·

3547 views

M

Martin

Hi Folks,


I have made a calculator to help settle arguments that come up about order or operations type questions.

Does divide come before multiply etc.


You can click in the expression like 1+2*3 = 7 or 9..?

A longer expression becomes less clear.


https://www.bodmas-calculator.com/


The expression is drawn as a tree, the tree can be collapsed revealing the result.


Be nice to have folks to see it since I've put an inordinate amount of time into creating it.


cheers

Martin

43 Answers

V
Vedika

It is an excellent tool

Obeng D Profile Picture
Obeng D Verified Sherpa Tutor ✓

Cambridge University Academic, QTS/OTLS qualified for 7+/11+/13 &GCSEs

1+2*3 = 7 because you do 2*3 =6 [* means x on the calculator, and in BODMAS multiply is worked out first before +] Then add 1 to 6 to get 7. "Does divide come before multiply"? Whenever you see divide and multiply presented in a problem, just follow the order as presented. For example: 3 x 4 ÷ 6 = 2 because, first you do 3x4 =12, then 12 ÷ 6 = 2

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.
Raneem A Profile Picture
Raneem A Verified Sherpa Tutor ✓

I am enthusiastic and specialized in mathematics, and I hold a BA, MA

1 reviews

7 as multiplication comes before addition

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.
M
Malcolm Wallace

should read 1 + (2*3). Work out the calculation in the brackets first


Does divide come before multiple

eg 7 * 9/3 - makes no difference which way round you do it

ie 63/3 is the same as 7 * 3

Adam B Profile Picture
Adam B Verified Sherpa Tutor ✓

Positive Secondary School Teacher of Mathematics

Divide and Multiply are equal in BODMAS (they are a pair and will be done in the order of left to right).


In terms of this questions 1 + 2 * 3 = 7.


Multiply is before addition in the order. So 2 * 3 = 6.


1 + 6 = 7

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.
Andrew W Profile Picture
Andrew W Verified Sherpa Tutor ✓

Simplifies the Complex

The multiplication and division is do before addition and subtraction. In this case 2*3 is the first step in the calculation.

1+2*3 = 1+(2*3) = 1+6 = 7


I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.
M
Manish Kumar Sharma

BODMAS means Bracket Of Division Multiplication Addition Subtraction. We give priority to Bracket most and in the decreasing order we give the least priority to Subtraction. Therefore in your above example first 3*2 will happen as Multiplication comes first from Addition which gives us 6 and adding 1 gives 7.

T
Tarek Khatib

1+2*3 is 7 and your calculator is a great will definitely be using!

Lukman Profile Picture
Lukman Verified Sherpa Tutor ✓

Expert and experienced Science KS3, GCSE and Chemistry A level Tutor!

Hi Martin,


BODMAS stands for Brackets/Order of powers/Divide/Multiply/Add/Subtract. In any Order of Operation task, you would follow this order from the acronym.


So in answer to your question above, you would Multiply the 2 and 3 together first (=6) then simply add 1 (6 + 1 = 7).


Hope that helps!

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.
A
Ali Shamsadin

The correct answer is 7 According to BODMAS multiplying comes first then adding

U
Usama Nasir

So with the bodmas rule, you have to multiply 2 and 3 first and then add it with 1.


So the answer will be 7

Silvanus Profile Picture
Silvanus Verified Sherpa Tutor ✓

22 yrs experience in teaching GCSE/A-Level Maths, Physics & Chemistry

So, long ago people agreed to follow rules when doing calculations, and the rule is denoted by BODMAS:


The RULE of calculation operation is denoted by BODMAS.


Evaluate the terms in the bracket first, followed by Order (Powers and Square Roots etc.), Division, Multiplication, Addition then Subtraction.


B Brackets first

O: Orders (i.e. Powers and Square Roots, etc.)

DM: Division and Multiplication (left-to-right)

AS: Addition and Subtraction (left-to-right)


yes5 × 22=5 × 4=20 Correct

 not 5 × 22=102=100 Wrong


yes 4 × (5 + 3)=4 × 8=32 Correct

 not 4 × (5 + 3)=20 + 3=23 wrong


yes 2 + 5 × 3=2 + 15=17 Correct

 not 2 + 5 × 3=7 × 3=21 wrong


yes 30 ÷ 5 × 3=6 × 3=18 Correct

 not 30 ÷ 5 × 3=30 ÷ 15=2 wrong


Cheers.


I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.
Simran A Profile Picture
Simran A Verified Sherpa Tutor ✓

Lets learn and growth together.

BODMAS stands for .Brackets, Orders, Division, Multiplication, Addition, Subtraction. So to solve 1+2*3, first comes multiplication that is 2*3=6 and then addition that is 6+1=7. So the answer is 7.

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.
Liam B Profile Picture
Liam B Verified Sherpa Tutor ✓

Ace your Physics and Maths GCSEs content and exam prep techniques

Great Resource for helping KS3 students with understanding and practicing BODMAS/BIDMAS

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.
Dr. Vivek Profile Picture
Dr. Vivek Verified Sherpa Tutor ✓

Fun and creative Maths and Physics Teacher with 6 years of experience

15 reviews

USe the BODMAS rule:


B - Brackets

O - Other (Of)

D - Divison

M - Multiplication

A - Addition

S - Subtraction

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.

Think you can help?

More Maths KS3 Questions
Sherpa Badge

Need a KS3 Maths tutor?

Get started with a free online introductions with an experienced and qualified online tutor on Sherpa.

Find a KS3 Maths Tutor