Mathorio
Answer key
Introduction to Volume
Show your work for each problem.
- 1.What does volume measure?
- a)The space inside a 3D object
- b)The flat surface of an object
- c)The weight of an object
- d)The distance around a shape
Answer: The space inside a 3D object
Volume measures the space inside a 3D object - how much it can hold or how many unit cubes fit inside.
- 2.Which unit is used to measure volume?
- a)kg (kilograms)
- b)cm (centimeters)
- c)cm (cubic centimeters)
- d)cm (square centimeters)
Answer: cm (cubic centimeters)
Volume is measured in cubic units like cm. The exponent 3 tells us it's a 3D measurement (length width height).
- 3.What is the formula for the volume of a rectangular prism?
- a)
- b)
- c)
- d)
Answer:
Volume = length width height. We multiply all three dimensions because volume measures 3D space.
- 4.A cube has sides of cm. What is its volume in cm?
Answer: 8
cm. A cube with 2 cm sides can hold 8 unit cubes (1 cm each).
- 5.A box is cm long, cm wide, and cm high. What is the volume?
Answer: 24
cm. We multiply all three dimensions to find the volume.
- 6.What is the volume of a cube with sides of cm?
Answer: 125
cm.
- 7.A box is cm cm cm. What is its volume?
- a) cm
- b) cm
- c) cm
- d) cm
Answer: cm
cm.
- 8.A rectangular prism is cm long, cm wide, and cm high. What is the volume?
Answer: 150
cm.
- 9.Which box has the larger volume: Box A ( cm) or Box B ( cm)?
- a)Cannot determine
- b)Box B is larger
- c)Box A is larger
- d)They have the same volume
Answer: They have the same volume
Box A: cm. Box B: cm. They have the same volume even though they look different!
- 10.Find the volume of a box that is cm long, cm wide, and cm high.
Answer: 30
- What is the length of the box? 5
- What is the width? 3
- What is the height? 2
- Multiply: 15
- Multiply: 30
- 11.A storage container is cm long, cm wide, and cm high. Find its volume.
Answer: 240
- Write the formula for volume l × w × h
- What is ? 48
- What is ? 240
- 12.A cube has a volume of cm. What is the length of each side?
Answer: 3
- For a cube, . What number cubed equals 27? 3
- Verify: 9
- Verify: 27
- 13.A fish tank is cm long, cm wide, and cm high. How many liters of water can it hold? (1000 cm = 1 liter)
Answer: 30
- What is ? 1000
- What is ? 30000
- The volume is 30000 cm. Divide by 1000 to get liters: 30
- 14.A gift box is cm cm cm. What is its volume in cm?
Answer: 576
cm.
- 15.A shipping container is m long, m wide, and m high. What is its volume in cubic meters?
Answer: 3
- What is ? 2
- What is ? 3
- 16.A cube has sides of cm. If you double the length of each side, what is the new volume?
Answer: 8000
- What is the original volume? () 1000
- If sides are doubled, new side length is? 20
- What is ? 400
- What is ? 8000
- 17.A rectangular box has a volume of cm. If the length is cm and the width is cm, what is the height?
Answer: 5
- What is (length times width)? 24
- We know: . What is ? 5