Substitute into everyday formulas

Question 1

Distance = speed × time (d = st). A train travels at 190 km/h for 5 hours. How far does it go, in km?

Answer 

Question 2

To change °C to °F, use F = 1.8C + 32. What is −5 °C in °F?

Answer 

Question 3

The surface area of a cube is A = 6s². Find A when s = 6 cm.

Answer 

Question 4

A taxi fare is C = 3 + 2m (in dollars), where m is the number of miles. Find C for a 20-mile trip.

Answer 

Question 5

To change °C to °F, use F = 1.8C + 32. What is −5 °C in °F?

Answer 

Question 6

The surface area of a cube is A = 6s². Find A when s = 7 cm.

Answer 

Question 7

The perimeter of a rectangle is P = 2(l + w). Find P when l = 7 cm and w = 6 cm.

Answer 

Question 8

To change °C to °F, use F = 1.8C + 32. What is 15 °C in °F?

Answer 

Question 9

The volume of a cube is V = s³. Find V when s = 3 cm.

Answer 

Question 10

Distance = speed × time (d = st). A train travels at 70 km/h for 5 hours. How far does it go, in km?

Answer 

Question 11

To change °C to °F, use F = 1.8C + 32. What is 30 °C in °F?

Answer 

Question 12

The volume of a cube is V = s³. Find V when s = 2 cm.

Answer 

Question 13

The perimeter of a rectangle is P = 2(l + w). Find P when l = 11 cm and w = 5 cm.

Answer 

Question 14

To change °C to °F, use F = 1.8C + 32. What is 20 °C in °F?

Answer 

Question 15

The volume of a cube is V = s³. Find V when s = 6 cm.

Answer 

Question 16

Distance = speed × time (d = st). A train travels at 80 km/h for 3 hours. How far does it go, in km?

Answer