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Add and Subtract Rational Numbers
Add and Subtract Rational Numbers
Alex needed school supplies for a project. He bought a poster board for 97 cents. He also bought new markers for $3.19. He gave the cashier a $10 bill. How much change did Alex receive?
$5.84
The city of Tyler has 1/6 of a city block reserved for businesses. They will divide the block into equal parts for four businesses. What is the size of the block that each business will receive?
1/24
Austen volunteers to pack lunches. She packs 38 bags of chips and 45 packages of cookies into large containers. She fills seven containers in 30 minutes. Austen uses the following equation to find c, the number of chips and cookies she packed into the containers:
c = (38 + 45)7
How many chips and cookies does Austen pack into the containers?
581
Derek bought a shirt from the store. The original price of the shirt was $23.98. Derek paid $5.50 less than the original price for the shirt. He also bought shorts for $17.95. What is the total Derek paid for the two items?
$36.43
Oliver made 14 cups of cupcake batter. He will fill cupcake tins with 1/2 cup of the batter until all the batter is gone. How many cupcakes will Oliver make with his batter?
28 cupcakes
Kolter Elementary earned $1,986 at a school-wide fund-raiser. There was a large donation of $550 given to the fund-raiser, and the rest of the money was earned by selling cards for $4 each. The following equation can be used to find f, the number of cards sold at the fundraiser:
f = (1,986 – 550) ÷ 4
How many cards did Kolter Elementary sell during the fund-raiser?
359
Anna baked cookies for her teachers. She baked the sugar cookies for 6 minutes and the oatmeal cookies for 9.5 minutes. What was the combined time that Anna spent baking the two types of cookies?
15.5 minutes
Mila bought a pack of lip balm that contained a total of 1/7 of an ounce of lip balm in five containers. Each container had the the same amount of lip balm. How many ounces of lip balm were in each container?
1/35 of an ounce
Olivia earned $67 last month from babysitting.
● She spent $14 on a book and $23 on a game.
● She spent the rest of her earnings on art supplies.
Which equation can be used to find s, the amount of money in dollars that Olivia spent on art supplies?
67 = s + 14 + 23
Ever has a pig, a dog, and a hamster. Altogether, the animals weigh 176.113 pounds. Ever’s pig weighs 116.8 pounds, and his hamster weighs 0.063 pounds. How much does Ever’s dog weigh?
59.25
Genesis practices the clarinet for 1/3 of an hour at a time. During the last 4 weeks, she practiced for a total of 18 hours. How many times did Genesis practice her clarinet in the last 4 weeks?
54
Ethan makes 98 cake pops.
● He gives 56 cake pops to his neighbor.
● He splits the remaining cake pops among six friends.
● Each friend receives the same number of cake pops.
Which equation can be used to find p, the number of cake pops each friend received?
(98 – 56) ÷ 6 = p
A runner is running a marathon. The marathon distance is 26.2 miles. She has run 18 3/10 miles so far. How much farther does the runner need to run to complete her race?
7.9 or 7 9/10
Elor used 36 pieces of paper to create a craft. He cut each piece into sixths. How many pieces of paper did Elor have after cutting them all equally?
216
Ms. McClintock is putting molding around the perimeter of her bedroom.
● The perimeter of her bedroom is 60 feet.
● Each piece of molding is 6 feet long and costs $22.
Which equation can be used to find m, the cost of the sections of molding Ms. McClintock needs for her bedroom?
(60 ÷ 6) x 22 = m