______________ are instructions that tell you what you are allowed to do and what you are not allowed to do.

Arrange the order of operation according to mathematician.

____________ must be strictly followed to get the correct answer in performing three or more operations.

The order by which you compute multiplication and division is determined by which one ________ first, reading from left to right.

30 – 20 + 10 =?

11 + 8 x 5 =?

15 x 2 – 5 =?

20 – 10 ÷ 5 =?

8 ÷ 2 x 5 =?

25 + 2 x 90 =?

300 + 183 – 173

400 – 40 x 4 =?

15 - 3 x 5 + 5 =?

50 ÷ 2 x 3 – 75 =?

15 + 3 x 20 =?

30 ÷ 2 x 4 – 8 =?

12 + 5 x 6 – 5 =?

10 ÷ 2 – 5 =?

5 x 3 – 5 =?

3 + 83 – 73 =?