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# Order of Operation Calculator

2 years ago

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43 Replies

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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
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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

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

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7 as multiplication comes before addition

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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
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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

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Andrew W
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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

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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
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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!

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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
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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 B**rackets first

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

**DM: D**ivision and **M**ultiplication (left-to-right)

**AS: A**ddition and **S**ubtraction (left-to-right)

5 × 2^{2}=5 × 4=**20 Correct **

5 × 2^{2}=10^{2}=100 Wrong

4 × (5 + 3)=4 × 8=**32 Correct**

4 × (5 + 3)=20 + 3=23 wrong

2 + 5 × 3=2 + 15=**17 Correct**

2 + 5 × 3=7 × 3=21 wrong

30 ÷ 5 × 3=6 × 3=**18 Correct**

30 ÷ 5 × 3=30 ÷ 15=2 wrong

Cheers.

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Simran A
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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.

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Liam B
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Ace your Physics and Maths GCSEs content and exam prep techniques

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

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Dr. Vivek
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Fun and creative Maths and Physics Teacher with 6 years of experience

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USe the BODMAS rule:

B - Brackets

O - Other (Of)

D - Divison

M - Multiplication

A - Addition

S - Subtraction

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