Mass and Volume — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. A Grade 3 recipe needs 750 g of flour. You have two bags of 450 g each. How many grams of flour do you have?
A) 750 g
B) 900 g
C) 1200 g
D) 450 g
Grade 3 students add 450 g + 450 g = 900 g, but total is 900 g which exceeds need; combined mass is 900 g.
2. A Grade 3 juice pitcher has 1500 mL. You pour out two 250 mL glasses. How much juice is left?
A) 1000 mL
B) 1250 mL
C) 500 mL
D) 1750 mL
Grade 3 learners compute 1500 - 500 = 1000 mL remaining.
3. A Grade 3 bag of rice has 5 kg. You use 2 kg on Monday and 1 kg on Tuesday. How much is left?
A) 1 kg
B) 2 kg
C) 3 kg
D) 4 kg
Grade 3 pupils find 5 - 3 = 2 kg of rice remaining.
4. A Grade 3 bottle holds 2000 mL. You drink 350 mL, then 450 mL. How much is left?
A) 1200 mL
B) 1100 mL
C) 1000 mL
D) 800 mL
Grade 3 learners compute 2000 - 800 = 1200 mL left.
Part B: Fill in the Blank
Write the correct answer on each line.
1. A Grade 3 recipe needs 600 g sugar. You have 250 g and 250 g. You still need 100 g.
Grade 3 students find 600 - 500 = 100 g more needed.
2. A Grade 3 jug holds 3 L. You pour out 750 mL twice. You have 1500 mL left.
Grade 3 learners compute 3000 - 1500 = 1500 mL.
3. A Grade 3 box has 4 apples of 150 g each. Total mass is 600 g.
Grade 3 students find 150 + 150 + 150 + 150 = 600 g.
4. A Grade 3 tank holds 10 L. You fill it with 2 L, then 3 L more. It still needs 5 L.
Grade 3 learners compute 10 - 5 = 5 L more needed.
5. A Grade 3 shopper buys 500 g cheese and 300 g ham. Total mass is 800 g.
Grade 3 students find 500 + 300 = 800 g of food.