Numerical Expressions
Divide 60 by 5.
60 / 5
Makayla refills the fuel for her portable heater before a camping trip. The fuel container has 1/8 pound of fuel. She adds another 3/4 pound of fuel. What is the number of pounds of fuel in the container after she refills it?
7/8
1/2 x 4/5
4/10
8,500 x 1/10
850
12 x 0.25
3
Write and evaluate a numerical expression for the sum of the three addends 8, 10, and 6 divided by 3.
Expression: (8 + 10 + 6) ÷ 3
Answer: 8
Kendall puts four 1/5-fraction strips in one row, and one 1/10-fraction strip in the row below it. What is the difference in the lengths of these rows?
7/10
2/5 / 1/6
2 2/5
10^2 × 827.56
82,576
The cost of two magazines is shown in an advertisement. Horse Health costs $4.85, and World of Ponies costs $3.69. What is the cost of both magazines?
$8.54
Masha is training for a marathon. She is doing tempo runs to increase her speed. In tempo runs, a runner varies their pace during the run. Masha jogs 1 mile, then runs at a fast pace for 11 miles. She finishes by walking 2 miles to cool down. Write a numerical expression to model the number of miles Masha runs, walks, or jogs.
1 + 11 + 2
Maya makes trail mix by combining 1/2 cup of mixed nuts, 1/4 cup of dried fruit, and 1/8 cup of chocolate morsels. What is the total amount of ingredients in her trail mix?
7/8
When Fran began training to become a professional swimmer, she could swim only 2/3 of the number of laps she can now swim in a session. If Fran can now swim 48 laps in a session, how many laps did she swim in a session when she began?
32
A city has a population of 36 × 104 . What is the population written as a whole number?
360,000
Anna has a sack with 3.55 pounds of potting soil. She puts 1.8 pounds of the soil in the pot of a rose plant. How much soil is left in the sack?
1.75 lb
Use parentheses to rewrite the numerical expression 25 – 4 × 3 + 2 to have a value of 11.
25 – (4 × 3 + 2)
Lara jumps rope for 2 3/4 minutes. Then she does squats for 1 1/2 minutes. How many minutes does Lara spend jumping rope and doing squats?
4 1/2
Jane is making a rectangular banner for school. The dimensions of the banner are 1 1/2 yards by 1 3/4 yards. What is the area of the banner?
2 5/8
Shelby multiplies 7,358.9 by a power of 10 and gets the product 73.589. What did she multiply by?
1/100
A fly measures about 0.25 millimeter in length. A bug is about 3 times as long as the length of the fly. A beetle is about 9 times as long as the length of the bug. What is the length of the beetle?
6.75 mm
Ms. Garcia has 120 comic books. She gives 15 to each of her three nephews, then buys 4 more.
Write and evaluate a numerical expression that describes the number of comic books she has now.
[120 - (3 x 15)] + 4
Answer: 79
Volunteers spend Friday and Saturday removing trash from a 6 2/5 -mile trail. They complete 4 7/8 miles of the trail on Friday. How many more miles of trail do they need to complete on Saturday?
1 21/40
Earth and Mars orbit the Sun. Each time Earth makes one complete orbit, Mars makes about 1/2 of its orbit. How many orbits does Earth make around the Sun in the time it takes Mars to complete 6 orbits?
12
Four different boxes weigh a total of 245 pounds. One box weighs 1/10 of the total amount. How much does this box weigh?
24.5
A zoo is planning a new building for the penguin exhibit. First, they made a model that was 1.3 meters tall. Then, they made a more detailed model that was 1.5 times as tall as the first model. The building will be 2.5 times as tall as the height of the detailed model. What will be the height of the building?
4.875