Ch 1 Ratios and Proportional Reasoning
Find the unit rate.
360 miles in 6 hours
60 miles per hour
Find 5% of 300
15
Write an integer for the situation:
5 degrees below normal
-5 degrees
Write 3/8 as a decimal.
0.375
15 + 0 = 15 is an example of which of the following properties?
A) Multiplication Property of Zero
B) Multiplicative Identity
C) Additive Identity
D) Associative Property
C) Additive Identity
Ben can type 153 words in 3 minutes. At this rate, how many words can he type in 10 minutes?
510 words
What percent of 5 is 4?
80%
Find |-5| - |2|
3
Write the decimal 5.96 as a mixed number.
5 96/100 =
5 24/25
Simplify
x - 1 + 2x + 3
3x + 2
Write 5 pounds for $2.49 as a unit rate. Round to the nearest cent.
$0.50 per pound
18 is 25% of what number?
72
Find 2 + (-15) + (-2)
-15
Order the numbers from least to greatest:
23%, 0.21, 1/4, 1/5
1/5, 0.21, 23%, 1/4
Simplify:
4 + 5y - 6y + y
4
Kenji buys 3 yards of fabric for $7.47. Then he realizes that he needs 2 more yards. How much will the extra fabric cost?
$4.98
Find the percent change and indicate whether it is an increase or decrease.
15 yards to 18 yards
20% increase
Stephanie has $152 in the bank. She withdraws $20. Then she deposits $84. Write an addition expression to represent this situation. Then find the sum and explain its meaning.
152 + (-20) + 84
$216
The balance in her account is $216.
1/2 - (-2/5)
9/10
Simplify
3(-4x + 8)
-12x + 24
CD Express offers 4 CDs for $60. Music Place offers 6 CDs for $75. Which store offers the better buy?
Music Place ($12.50 per CD, whereas CD Express is $15 per CD)
A customer wants to tip 15% on a restaurant bill that is $35. What will be the total bill with tip?
$40.25
On December 24th, 1924, the temperature in Fairfield, Montana, fell from 63 degrees Farenheit at noon to -21 degrees Farenheit at midnight. What was the average temperature change per hour?
decrease of 7 degrees per hour
84/12
A hybrid car's gas tank can hold 11 9/10 gallons of gasoline. It contains 8 3/4 gallons of gasoline. How much more gasoline is needed to fill the tank?
3 3/20 gallons
Simplify (Hint: Distribute first, then combine like terms)
3(4x - 5) + 4(2x + 6)
20x + 9
3(4x - 5) + 4(2x + 6)
12x - 15 + 8x +24