Chapter 4
Find the GCF of 16, 60
4
List all factors of 50
1,2,5,10, 25, 50
Write as a unit rate: A car travels 480 miles in 8 hours.
480/8
Then, divide and you get 60 miles per hour
Theo drove 500 miles then Sandra drove 200 miles. They were driving at a speed of 50mph. How long did it take them to travel?
14 hours
5/8c - 8 = 12
32
Scientific Notation:
Write 555,900 in scientific notation
5,559 X 108
5( 4-2)2
20
Proportions:
2/v = 1/8
16
There were 5 original colors of Skittles. Now there are 14 colors. What fraction of Skittle colors are original?
5/14
3y - 20 = 8y
-4
State the prime factorization of 45
32 x 5
2 1/5 X 3/4
1 13/20
Probability:
What is the probability that, if I roll a dice, it will land on an even number?
3/6 = 1/2= 50%
The length of a rectangle is 3 cm more than twice the width. The perimeter is 84 cm. Find the length.
(2W+3) +w =
3W + 3 = 42
3W = 39
W = 13
Now, Plug 13 in for W (
29
10 + 4a < -6
a < -4
3,9
(2c2)5
32c10
40% of k = 10
40/100 = 10/k
25
In 4 hours, 5 boys picked 2,045 apples. If they share the apples evenly, then each boy will get how many apples?
409 apples each....they had a belly ache later.
Solve for the in bolded italics:
r = 2s - 8
s = 1/2r + 4
Add 8 to each side, then divide by 2
r+ 8 / 2 = 1/2r + 4 (8/2 = 4)
Multiply (2.7 X 10-5)(3.5 X 10-4)
2.7 X 3.5 = 9.45
Add the exponants you get -9
put it together,
9.45 X 10-9
Find the LCM of 6a3 and 8a
24a3
Write 7/20 as a percent
35%
In a scale drawing of a house, the dining room is 0.75 in long. The actual length of the dining room is 24 ft. The living room is 32 ft. long. Find the length of the living room on the drawing.
1 in.
Simple Interest:
Find the simple interest on $860 deposited at an interest rate of 3.5% for 3 years.
$90.30