Adding
Subtracting
Multiplying
Dividing
Proportional Relations
100
6.1 + 8.9
15
100
13 - 8
5
100
(-2) x (-7)
14
100
How do you change division to multipliucation?
Keep the first number, turn division to multiplication, then flip (reciprocal) the second number.
100
Jack walks 7.5 miles in 1.5 hours. What is her average in miles per hour?
5 mph
200
1/2 + 8/2
9/2 or 4.5
200
1/6 - 2/6
-1/6
200
2.1 x 9
18.9
200
What is
56 div -4
-14
200
The double number line shows the relationship between the total weight in pounds and the number of cans of peaches.
Explain the circled ratio.
Each can of peaches weighs 1 1/6 lbs
300
16 + (-5)
11
300
8.7 - 11.2
-2.4
300
What is the following fraction in simplified form?
5/6 *2/10
1/6
300
Four business owners have to split a bill evenly. If the bill is $462.60, how much does each owner pay?
$115.65
300
A restaurant owner buys rice in bulk. The graph shows the relationship between the number of pounds of rice and the total cost.
What do the points (2,5) and (6,15) mean?
It means 2 lbs of rice cost $5 and 6 lbs of rice cost $15
400
-2.98 + (-4.567)
-7.547
400
Maria has 4 cups of flour. She uses 9/8 a cup for each of her batches of cookie. If she has made 2 batches of cookies, how much flour does Maria have left?
1.75
1 3/4
7/4
400
A mill drops 2.8 ml of sand each minute. What rational number represents the amount of sand that has been dropped after 5 and a half minutes? Express your answer as a decimal.
-15.4
400
What is,
(3/8)/(5/4)
3/10 or 0.3
400
Tania uses the equation c =21h to figure out the total amount, c, she should charge for babysitting h hours.
a) What is the constant of proportionality?
b) Tania charges $73.50 for a job. How long did she babysit for?
a) 21
b) 3.5 hours
500
What is the sum of the following numbers expressed as an improper fraction?
3/8 and 9.1
379/40
500
At 6pm it is -3 degrees Fahrenheit. By 10pm the temperature was at -19 degrees Fahrenheit. What is the change in temperature?
It went down 16 degrees
500
Each of the 11 teammates run an equal amount in a race. If each teammate runs 2/11 of a mile, how many miles has the team ran after the 7th teammate runs?
14/11 or 1.2727... or 1 3/11
500
Rebecca read 102 books in 10.2 months.
How many books per month did she read?
10 books per month
500
Both lines graphed are proportional.
What is the equation of each line?
a: y=4x
b: y=2/5 x