Adding Rational Numbers
6.25 + (-8.50)
-2.25
-15 + 3
-12
16 ∙ -12
-192
5/8 ÷ 3/4
5/6
-3.6
15.6 + (-1.8)
13.8
Solve.
-11.0 – 3.5
-14.5
-8/9 ÷ 2/3
negative one and one third
Solve.
7/8 ÷ (-1/6)
-5 1/4 (negative 5 and 1/4)
True or False.
-3/6 x (-3/8)
The solution to this problem will be negative.
False, the solution will be positive.
-1 1/8 (negative 1 and 1/8)
Write an equivalent expression.
-4.6 - 8.4
-4.6 + (-8.4)
2 1/4(-15.2)
two and one fourth times negative fifteen and two tenths
-34.2
Solve.
26.04 ÷ -6.2
-4.2
Which of the following situations combine to make zero?
A. The temperature falls 10 degrees below zero and then rises to 10 F.
B. A friend borrows $20 and promises to return double the amount.
C. A start-up business has income equal to its expenses.
C
A homeowners’ association charges a $3.85 fee for each day your payment is late. If a bill was originally $98.75 and paid 13 days late, then how much is owed to the homeowners’ association?
$148.80 owed
The record low temperature in Fargo, ND is -35 F. The record high is 114 F. What is the difference in the record high and the record low temperatures?
149 degrees F
Alyson uses a gift card to purchase a $5.87 gourmet coffee each week. Find the total change in the gift card balance after 3 weeks.
-$17.61
Emma borrowed $89.40 from her sister. She determines that she can pay her back in six months. What effect will Emma’s repayment have on her bank account balance each month?
-$14.90 will be taken each month
A class is organizing a going-away party for one of their students. They spend $26.38 on decorations, $78.92 on food, and $34.50 on a gift. If there are 15 students in the class who agreed to split the cost evenly, then how much does each person owe?
$9.32
Precipitation for the month of March was 4 3/4 inches less than average. In April, the precipitation was 1 1/2 inches less than average. How many inches below average was the precipitation for both March and April?
6 1/4 below average (6 and 1/4)
A chemist is observing a solution’s temperature over a four-hour period that starts at -12.4°C. In the four hours, the temperature rises 5.7°C and drops 8.1°C. What is the temperature of the solution after four hours?
-14.8 degrees
Joy is reading a 352-page novel for her summer reading project. On Monday she reads 3/8 of the novel. On Tuesday she reads 28 pages, and on Wednesday she reads 1/4 of the novel. How many more pages does Joy have until she finishes the novel?
104 pages
Mrs. Magee purchased 3 ice cream cones with a $10 bill. Mrs. Magee was given $2.86 in change. What is the price of one ice cream cone?
$2.38 each
Jesse needs 8 1/4 feet of chain to complete an outdoor project. He has two small pieces measuring 2 1/8 feet and 3 3/4 feet. How many feet of chain does Jesse need to purchase?
2 3/8
two and three eighths