Examples

Calculate: 3 \times (7 - 3)

Solution

In this question, we have a bracket, a subtraction and a multiplication.

BODMAS tells us that brackets come first, so we calculate:

3 \times (7 - 3) = 3 \times 4 = 12

Question

Calculate 2 + 3 \times 5 - 4

Did you get 13? If not, remember that multiplication comes before addition and subtraction, so we have:

2 + 3 \times 5 - 4

= 2 + 15 - 4 = 13

Question

Paula says that 2 \times 3 - 2 \times 5 =  - 4

Steve says the answer is 10. Who is right, and why?

Paula is correct. Multiplication comes before addition and subtraction, so:

2 \times 3 - 2 \times 5 = 6 - 10 =  - 4

Question

Calculate {(15 - 3 \times 2)^2}

{(15 - 3 \times 2)^2}

= {(15 - 6)^2}

= {(9)^2} = 81

Question

Put brackets into this equation to make it work 4 \times 5 - 3 = 8

4 \times (5 - 3) = 8

Question

Put symbols and brackets into this equation to make it work 7\,5\,3 = 6

(7\, - 5)\, \times 3 = 6

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