Mass and Volume — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. A Grade 3 pitcher holds about 3 liters of water for lunch.
Pitchers hold several liters of liquid.
2. A small bag of sugar has a mass of about 500 grams in Grade 3.
Half a kilogram equals 500 grams.
3. A Grade 3 watermelon has a mass of about 4 kilograms on the scale.
Large fruits use kilograms, not grams.
4. An ink pen in Grade 3 has a mass of about 10 grams.
Small objects like pens are measured in grams.
5. A Grade 3 soup bowl holds about 300 milliliters of soup at lunch.
Bowls hold a few hundred milliliters of liquid.
6. A Grade 3 car gas tank holds about 50 liters of fuel.
Car fuel tanks are measured in liters.
7. A single grape in Grade 3 has a mass of about 5 grams.
A grape is very small, only a few grams.
8. A Grade 3 milk carton at school holds about 1 liter of milk.
Milk cartons often hold 1 liter.
9. A Grade 3 elephant has a mass of about 5000 kilograms.
Elephants are measured in thousands of kilograms.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Grade 3 paperclip mass
→ 1 gram
1 gram
Grade 3 bag of rice mass
→ 2 kilograms
2 kilograms
Grade 3 eyedropper volume
→ 3 milliliters
3 milliliters
Grade 3 fish tank volume
→ 40 liters
40 liters
Small light objects use grams or milliliters; heavy or large ones use kilograms or liters.