Mass and Volume — Answer Key
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
The beaker in Grade 3 shows 250 liters of juice.
Corrected: The beaker in Grade 3 shows 250 milliliters of juice.
Grade 3 students learn that a beaker with 250 mL marks shows milliliters.
2. Fix the sentence:
A scale in Grade 3 measures the volume of an apple.
Corrected: A scale in Grade 3 measures the mass of an apple.
Grade 3 learners know scales show mass; beakers show volume.
3. Fix the sentence:
The pointer landed on 400 km on the Grade 3 kitchen scale.
Corrected: The pointer landed on 400 g on the Grade 3 kitchen scale.
Grade 3 pupils recognize that g stands for grams of mass.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. On a Grade 3 balance scale, an object reads 500 g if the needle points to five hundred grams.
Grade 3 learners write g as the symbol for grams.
2. A Grade 3 beaker with water up to the 1 L line holds one liter.
Grade 3 students know 1 L means one liter of liquid.
3. If the Grade 3 scale arrow points between 2 and 3 kg on the 2 kg line, the mass is 2 kg.
Grade 3 readers see kg on scales for kilograms.
4. The Grade 3 beaker is marked every 100 mL up to 1000 mL, which equals 1 liter.
Grade 3 students learn 1 L = 1000 mL for volume.
Part C: True or False?
Read each statement. Circle True or False.
1. A Grade 3 kitchen scale reading 750 g shows mass in grams.
True False
Grade 3 learners confirm g is the grams symbol.
2. A Grade 3 beaker filled to 500 mL holds 500 kilograms of water.
True False
Grade 3 students know mL means milliliters of volume.
3. On a Grade 3 analog scale, each small mark between 0 and 100 g often shows 10 g.
True False
Grade 3 scales divide 100 g into ten 10-gram steps.