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'Order' and 'Index' mean the same thing. (They are sometimes known as exponents too.)

Algebra - BODMAS Otherwise Known as BIDMAS

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In algebra, the 'O' in BODMAS stands for 'Order' and the 'I' in BIDMAS stands for 'Index'. 'Order' and 'Index' mean the same thing. The rules of BODMAS (otherwise known as BIDMAS) in Math are fairly easy to remember but all too easy to forget!

1 .

If x = 5, which of these calculations is correct?

6 + x + 7 - 3 + x - 2 = 24

6x + 7 - (3x - 2) = 24

(6x + 7) (3x - 2) = 24

6x + 7 - 3x - 2 = 24

30 + 7 - 13

2 .

What is the value of 3x² when x = 2?

3 x (2 x 2)

3 .

What is the correct sequence for mathematical operations?

Addition, Brackets, Division, Order, Multiplication, Subtraction

Brackets, Division, Addition, Order, Multiplication, Subtraction

Brackets, Order, Division, Multiplication, Addition, Subtraction

Subtraction, Addition, Multiplication, Division, Order, Brackets

They don't call it BODMAS for nothing!

4 .

What is the value of 2a³ - a, when a = 4?

118

120

122

124

(2 x 64) - 4

5 .

What is the value of (3 + a)(4 + a) when a = 4?

7 x 8

6 .

What is the value of 2 x 3 + 5?

Work out the multiplication sign BEFORE the addition sign

7 .

What is the value of (3x)² when x = 2?

(3 x 2)(3 x 2)

8 .

What is the value of 2 + 3 x 5?

Work out the multiplication sign BEFORE the addition sign

9 .

What is the value of x³ / (4y - 7), when x = 5 and y = 8?

125 / 25

10 .

'Order' and 'Index' mean the same thing - they are the small numbers to the upper right of other numbers. What other name is sometimes given to these small numbers?

Expatriates

Expendables

Exponents

Expulsions

Whatever you call them, they need to be dealt with immediately after Brackets

Author: Frank Evans