Calculations with variables

Maths

Order of operations

Which calculation matches the statement: I think of a number. I multiply my number by 2 then I subtract 5. (In the below calculations, m represents the originally thought number.)

Which calculation matches the statement: I think of a number. I subtract 5 from my number then I multiply by 2. (In the below calculations, m represents the originally thought number.)

Which calculation matches the statement: I think of a number. I subtract 5 from my number then I multiply by 2. I then subtract subtract 6 and finally multiply by 3.

Which of the following values of m gives an answer between 50-60 for the following calculation?  5 x m  - 3

Which of the following values of m gives an answer between 30-35 for the following calculation?  5 x (m  - 3)

Which of the following statements matches the calculation 15 x (5 - 3)?

Add 3 to 5, then multiply by 15 and then add 3

Multiply 15 by 5, then subtract 3 and then add 3

Subtract 3 from 5, then multiply by 15 and then add 3

Which of the following statements matches the calculation 15 x (5 - 3) + 3?

Calculations with variables

Lesson outcome