Decimal Operations
Subtract: 80-39.6
40.4
Emma had some marbles. She gave away 7 of them and now has 15 left. How many marbles did she have to start with?
22
Sarah was selling bags of cookies for a bake sale. For every 3 chocolate chip cookies she put in the bag, she puts 2 peanut butter cookies in as well. If she bagged up 30 peanut butter cookies, how many chocolate chip cookies did she put in the bag?
45 chocolate chip cookies
4 is what percent of 80?
5%
What is the absolute value of -10?
10
3.24 + 2.7 =
Write an algebraic expression:
3 times a number, plus 7
3x + 7
Banana slugs can move at 17 cm per minute. If a banana slug travels for 5 minutes, how far will it travel?
85 cm in 5 mins
Solve:
2/3 x 4/5?
8/15
Solve:
16-10+2*3
12
Solve: 395-23.7
371.3
Write the algebraic expression.
2 less than y
y - 2
Gracie is buying apples. They cost $1.35 per pound, and she purchased 12 pounds. How much did the apples cost her?
$16.20
Write a fraction equivalent to
8/15 =?/75
40/75
Write the prime factorization of 128
27
3.7 × 2 =
7.4
Sam bought 5 notebooks. Each notebook costs the same amount. If he spent $20 in total, how much did one notebook cost? Write an algebraic equation to represent this situation.
5x=20
If Adam’s plane traveled at a constant speed of 375 miles per hour for six hours, how far did the plane travel?
2,250 miles
1/8 divide 2/6
3/8
Show your work and solve using the DISTRIBUTIVE PROPERTY!
5 (x - 3)
5x-13
6.4 ÷ 2 =
3.2
x/4 = 6
x=24
For every 3 apples, there are 2 oranges in a fruit basket.
If there are 12 apples, how many oranges are there?
8 oranges
Find 67% of 200
134
Lena is wrapping a rectangular gift box for her friend. The box is 10 inches long, 4 inches wide, and 3 inches high. What is the surface area of the gift box?
164 square inches