Decimal Addition & Subtraction
Add: 124.35 + 68.42 = ?
192.77
3.5 × .6 = ?
2.1
84 ÷ 7 = ?
12
A movie ticket costs $8.75. If 5 friends go to the movies, what is the total?
$43.75
45 cookies are divided among 8 kids. How many cookies does each kid get, and how many are left over?
5 cookies each, 5 leftover
Subtract: 95.08 – 27.64 = ?
67.44
A notebook costs $2.75. How much do 8 notebooks cost?
$22.00
56.4 ÷ 6 = ?
9.4
Gas costs $3.49 per gallon. How much does 12 gallons cost?
$41.88
A bus holds 48 people. If 215 people need rides, how many full buses are needed, and how many people are left without a seat?
4 full buses (192 people) + 23 leftover → need 5th bus
Jamie bought snacks for $12.85, $4.25, and $9.40. How much did she spend in total?
$26.50
A runner jogs 4.2 miles each day for 12 days. If she runs 2.8 miles less on the last day, what is her total mileage?
47.6 miles
A 42.75-liter container of juice is divided equally into 15 bottles. How many liters per bottle?
2.85 liters
A family of 6 orders pizza. Each pizza costs $12.85, and they order 4 pizzas. What is the total bill?
$51.40
A 42.75-liter container of juice is divided equally into 15 bottles. If each bottle is sold for $3.25, how much money is earned?
2.85 L per bottle → $48.75 total
A music player costs $158.75. You have $200. How much change will you get?
$41.25
A pack of 12 markers costs $5.48. A teacher buys 24 packs. What is the total cost of all markers?
$131.52
4,368 ÷ .12 = ?
3.64
A local toy store sold 36 board games in the morning for a total of $1,080. In the afternoon, they sold three times as many board games at the same price. How much money did the store make that day?
Price per game = $1,080 ÷ 36 = $30
Afternoon sales = 36 × 3 = 108 games
Total games = 36 + 108 = 144 games
Total sales = 144 × $30 = $4,320
or
Morning sales = $1,080
Afternoon sales = $1,080 x 3 = $3,240
All Day Sales = $1,080 + $3,240 = $4,320
A candy shop sells jellybeans and lollipops.
A 4-pound bag of jellybeans contains 2,400 jellybeans.
A 4-pound bag of lollipops contains 1,600 lollipops.
Each 4-pound bag is divided into 1-pound bags.
How many more jellybeans are in a 1-pound bag than lollipops in a 1-pound bag?
Jellybeans per 1-pound bag = 2,400 ÷ 4 = 600
Lollipops per 1-pound bag = 1,600 ÷ 4 = 400
Difference = 600 – 400 = 200
A movie ticket costs $9.25. A family of 4 also buys 2 large popcorns for $7.80 each. How much do they spend altogether?
$52.60
A factory produces 128.6 pounds of cereal each hour. How many pounds will it produce in 36 hours? If 15 pounds fit in a box, how many full boxes are packed?
4,629.6 lbs → 308 full boxes (remainder 9.6 lbs)
A road trip is 1,215 miles. If the car averages 45 miles per hour, how many hours will it take?
27 hours
Ms. Lopez is driving 378 miles each way to visit her sister. Her car averages 27 miles per gallon, and gas costs $3.45 per gallon. How much will she spend on gas for the round trip?
Round trip distance = 378 × 2 = 756 miles
Gallons needed = 756 ÷ 27 = 28 gallons
Gas cost = 28 × $3.45 = $96.60
A library has 4,785 books. Each shelf holds 36 books. How many full shelves are filled? If each room holds 25 shelves, how many rooms are filled and how many shelves are partly used?
132 shelves filled, 9 books left → 5 full rooms, 7 shelves in the 6th room