Adding/Subtracting Fractions
What is 1/4 + 1/4?
2/4 or 1/2
What is 1/2 × 4?
2
0.5 + 0.25.
0.75
Multiply: 0.5 × 0.2.
0.1
What is the volume in cubic units of a rectangular box with length 2, width 3, and height 1? (Use unit cubes.)
6 units cubed
Add: 2/3 + 1/6.
5/6
Find: 2/5 × 3/4. Simplify the product.
6/20 or 3/10
Subtract: 1.2 − 0.75.
0.45
Find: 2.4 × 3.
7.2
Find the volume of a rectangular prism with dimensions 4 × 2 × 3.
24 units cubed
Subtract: 7/8 − 3/16. Write your answer in simplest form.
11/16
Compute: 3 × 2/3.
2
Sarah bought a toy for $4.95 and a book for $3.60. How much did she spend in total? Show decimal addition.
$8.55
Divide: 4.5 ÷ 0.5. Solve and explain how place value helps find the quotient.
9
A box is 5 units long, 3 units wide, and 2 units tall. If each unit cube costs $0.50, what is the cost to fill the box? (Find volume, then multiply by price.)
30 units cubed x $0.50 =$15
A recipe needs 2 1/2 cups of flour. You already added 1 3/8 cups. How much more flour is needed? Give the answer as a mixed number in simplest form.
1 1/8
Solve: (5/6) ÷ (1/3). Write the answer as a whole number or fraction and explain the division interpretation.
2 1/2 or 2 3/6
Round 6.378 to the nearest hundredth, then subtract 2.45. Show both steps.
6.38-2.45=3.93
Compute: 0.36 × 0.4 and show how to determine decimal placement in the product.
0.144
Find the volume of a composite solid made of two non-overlapping rectangular prisms: Prism A is 4 × 2 × 3, Prism B attached on top is 2 × 2 × 2. What is the total volume?
32 units cubed
Jamie and Priya share a 3 2/3–mile hike. Jamie hikes 1 5/6 miles and Priya hikes the rest. How many miles did Priya hike? Show work using fraction models or equivalent fractions.
1 5/6
A rectangular garden is 3/4 yard wide and 2 1/2 yards long. What is its area in square yards? Show how to multiply the mixed number by the fraction.
1 7/8
A bucket can hold 12.75 liters of water. If it there is already 3.2 liters of water in it, how much more water can be put in the bucket?
9.55
A ribbon is 4.25 meters long. It is cut into pieces each 0.5 meters long. How many pieces are there? Show the division and reasoning.
8.5
A storage bin is 25 in long, 12 in wide, and 8 in tall. What is the volume?
2,400 in cubed