BIDMAS – Cities of the World

Our new Maths topic is B.I.D.M.A.S. (also known as BODMAS). BIDMAS stands for Brackets, Indices, Division and Multiplication, Addition and Subtraction. All of these terms are fairly obvious except for ‘Indices’, which are just powers (eg 2³ or 4² etc.) So the order you should do your calculations in is: Brackets. Indices. Multiplication. Division. Addition. Subtraction. Click here to remind you how to work it out.

Use the table below and the rules of BIDMAS to work out the answers to the questions and unravel these famous cities of the world. Remember to show all working to show your understanding and to help you work through the BIDMAS process. See the example below to remind you how to work it out or visit Maths is Fun – BIDMAS.

Example City:

1. 7 + 7 x 2 = 7 + 7 x 2 = 7 + 14 = 21      U
2. 16 ÷ 2²  – 3 = 16 ÷ 2²  – 3 = 16 ÷ 4 – 3 = 4 – 3 = 1   A
3. 17 – (2 + 14) = 17 – (2 + 12) = 17 – 14 = 3    C
4. 46 – 4 x 11 = 46 – 4 x 11 = 46 – 44 = 2    B

UACB = Cuba

City 1

1. 2 × 6 + 3
2. 3 × 5 – 4
3. 5 + 3 × 3
4. 7 – 6 ÷ 3
5. (2 + 4) × 3
6. 7 + 4²
7. 3² + 4²

City 2

1. (9 + 7) ÷ 4
2. 2 + 3 × 4
3. (2 + 3)²
4. (2 + 4 × 7) ÷ 6
5. 3 + 4²
6. 8 × 2 + 3 × 3

City 3

1. (7 + 6) ÷ (17 – 4)
2. 3 + 2 × 4
3. 4² ÷ 2³
4. 4 + 2 × 5
5. 28 ÷ (9 – 5)
6. (7 – 2) × (9 – 6)
7. (2 × 22) ÷ 2²

City 4

1. (6 × 4) ÷ √9
2. 1 + 2³
3. (1 + 8 × 3) ÷ (15 – 2 × 5)
4. 4² ÷ 4
5. (8 × 6) ÷ 2²

City 5

1. 4 + 3 × 5
2. 3 × 9 – 4
3. (6 + 3 × 8) ÷ (11 – 3²)
4. (11 + 4) ÷ (8 – 3)
5. 1 + 7 × 2
6. (4 × 7 – 2) ÷ (16 – 7 × 2)

Find the famous cities by reordering the letters that you’ve found.