Multiplying and Dividing Negative and Positive Numbers
Solving Equations
Unit Rates
Rate of Change
100
What is 8.2 - 4 ?
4.2
100
What is 8 times - 2 ?
- 16
100
What is x - 17 = 17 ?
24
100
Josh can jog 52 miles in 2 hours.
What is his average speed in miles per hour?
26 miles per hour or 26/1
100
A climber is on a hike.
After 2 hours he is at an altitude of 400 feet.
After 4 hours he is at an altitude of 800 feet.
What is the rate of change in feet per hour?
200 feet per hour
200
What is - 17 + 20 ?
3
200
What is -15 times -15 ?
225
200
What is x + 14 = 56 ?
42
200
Tom can read 30 pages in 1.5 hours.
What is his reading speed pages per hour?
20 pages per hour or 20/1
200
At 2pm the level of water in the pool was 10 feet.
At 6pm the level of water was 2 feet.
What is the rate of change of the water?
2 feet per hour
300
What is -14 -2 ?
- 16
300
What is - 4 times - 6 times 2 ?
-48
300
What is -42 + x = - 56
-14
300
A truck driver drove 350 miles in 8.75 hours.
What is his speed of the truck in miles per hour
40
300
The temperature at noon was 88 degrees.
By 4 P.M., the temperature was 72 degrees.
What is the rate of change of the temperature.
4 degrees per hour
400
What is -30 + 14 ?
-16
400
What is - 14 times - 14 ?
196
400
What is 2(x + 6) - 14 = 4 ?
3
400
Amy can walk 4.5 miles in 1.5 hours.
What is her average speed in miles per hour?
3 miles per hour or 3/1
400
Jaz was 43 inches tall.
Eighteen months later, she was 52 inches tall.
Find the rate of change for Jaz’s height.
1/2 inches per month
500
What is - 6 + 7 - 14 ?
-13
500
What is - 2.5 times 6 ?
- 15
500
What is -3(x + 3) + 12 = 18
-5
500
Mary is making curtain for her kitchen windows. She bought 2 and 1/2 yards of fabric. Her total cost was $50. What was the cost per yard.
20
500
Joanne is depositing money into a bank account.
After 3 months there is $150 in the account.
After 6 months, there is $300 in the account.
What is the rate of change of the account?