BIDMAS

The Maths Habit

Work it out on your own.

6 + 4 × 3

Did everyone get the same answer?

18, not 30

Operation
Something you do to numbers: add, subtract, multiply or divide.
Indices
Powers.

BBrackets IIndices DDivide MMultiply AAdd SSubtract

4 + 2 × 5

Work out

  1. 3 + 6 × 2

    15

  2. 20 − 12 ÷ 4

    17

30 − 2 × 32

5 + 3 × (8 − 6)2

= 17

= 5 + 3 × 22   Brackets

= 5 + 3 × 4   Indices

= 5 + 12   Multiply

= 17   Add

4 + 2 × (9 − 6)2

= 22

5 + 3 × (8 − 6)2

= 17

7 + 5 × (4 − 2)2

= 27

5 + 3 × (8 − 6)2

= 17

20 − (1 + 2)2 × 2

= 2

5 + 3 × (8 − 6)2

= 17

32 + 24 ÷ (7 − 3)

= 15

5 + 3 × (8 − 6)2

= 17

(4 + 2 × 3)2 ÷ 5

= 20

BIDMAS worksheet, page 1

BIDMAS worksheet, page 2

Answer sheet

  1. Put one pair of brackets into 4 + 6 × 2 − 1 so that the answer is 19.

    (4 + 6) × 2 − 1

  2. Use 2, 3 and 4 once each, with one + and one ×, and brackets if you like. What is the biggest answer you can make?

    (2 + 3) × 4 = 20

  1. Work out 18 − 4 × 3

    6

  2. Work out 4 + 2 × (6 − 1)2

    54

  3. Put one pair of brackets into 3 + 5 × 4 − 2 so that the answer is 30.

    (3 + 5) × 4 − 2
Exit tickets to print