Add & Subtract Decimals
Subtract: 128.8-9.44
119.46
5.43 x 103
5, 430
Chris owns 74 sets of basketball cards. Each set has exactly 606 cards. What is the total number of basketball cards Chris owns?
44, 844 cards
4,900 divided by 70
70
What is the first step in evaluating 17 + 8 x 7 - 6 + 5 - (6 - 1)?
(6 - 1)
Sarah paid $7.65 for a sandwich. She paid $2.35 for a drink. How much money did Sarah pay for her sandwich and drink?
$10.00
Estimate the product of 25.2 x 19.76 by rounding each factor.
25 x 20 = 500
Multiply: 360 x 40
14,400
An airplane travels 6,000 miles in 30 hours, going the same distance each hour. How many miles does the plane travel each hour?
200 miles per hour
Evaluate: 4 + [2 x (5 + 5)]
24
Luke received a $105 gift card to the mall. He spent $4.13 on 2 Pokemon packs, $64.99 on a new game, and $11.82 on a new shirt. About how much of the gift card does he have left?
About $24.00
Lily has a flower bed that is 330.5 square feet. She wants to fill 0.4 of the bed with roses. How many square feet should be used for roses?
132.2 square feet or 132.20 square feet
A case of canned beans holds 34 cans. How many cans are in 27 cases?
918 cans
At top speed, a cheetah can run 6,400 feet in 8 seconds. How many feet can it run in 1 second?
800 feet
62 ➗ 6 x (5 +10) - 52
38
Mr. Rogers has a piece of wire that is 75.23 centimeters long. He cuts off two pieces of wire that are 5.34 centimeters long. What is the length of wire left, rounded to the nearest tenth?
64.6 centimeters
Find the quotient: 75.6 divided by 100
0.756
755 x 96=
72, 480
There are 59 miners who need to ride the elevator to the bottom of the mine. The elevator can hold 12 miners at a time. How many miners will be in the elevator on its last trip?
11 miners
Marcy tried to evaluate the expression 16 ➗ 4 + 8 x 3. Here is her work:
16 ➗ 4 + 8 x 3
Step 1: = 4 + 8 x 3
Step 2: = 12 x 3
Step 3: = 36
Is Marcy's work correct?
No, Marcy made a mistake in Step 2. She should have multiplied before she added. Order of operations says the multiply before you add.
A chemist has several beakers full of different liquids that she will use to make a solution. The chemist records the amount of liquid in each beaker: 50.1 milliliiters, 36.9 milliliters, 79.7 milliliters and 86.1 milliliters. How many milliliters of solution will the chemist have after she mixes together the liquids in the beakers?
252.8 milliliters
Asher's bag of shells weighs 6.82 pounds. He finds 2 stones that weigh the same as each other and adds them to the bag. Asher's bag now weighs 8.52 pounds. What is the weight of each stone, rounded to the nearest tenth of a pound?
0.9 pound
A one-tablespoon serving of olive oil contains 130 calories. The label on the bottle of the olive oil states that it contains 77 servings. How many calories are in the whole bottle of olive oil?
10, 010 calories
A car dealership needs to transport 82 cars to an island. If the ferry can hold 45 cars, how many trips will the ferry need to make?
2 trips
Jeffrey tried to evaluate the expression 3 + 16 ➗ 4 x 2. Here is his work:
3 + 16 ➗ 4 x 2
Step 1: = 3 + 16 ➗ 8
Step 2: = 3 + 2
Step 3: = 5
Is Jeffrey's work correct?
No. Jeffrey made a mistake in Step 1. He should have divided before multiplying. The order of operations says to multiply and divide from left to right.