Measuring Length — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Which measurement is most reasonable for the height of a classroom door?
A) 7 inches
B) 7 feet
C) 7 miles
D) 7 centimeters
A classroom door is about 7 feet tall. This is a reasonable real-world measurement.
2. Three pencils each 8 inches long are laid end to end. What is the total length?
A) 16 inches
B) 20 inches
C) 24 inches
D) 32 inches
3 × 8 = 24. Three pencils end to end measure 24 inches total.
3. A ribbon is 30 cm long and is cut into 5 equal pieces. How long is each piece?
A) 3 cm
B) 5 cm
C) 6 cm
D) 10 cm
30 ÷ 5 = 6. Each piece of ribbon is 6 cm long.
4. A fish tank is 60 cm long. A toy fish is 12 cm long. How many fish fit side by side?
A) 3
B) 4
C) 5
D) 6
60 ÷ 12 = 5. Five toy fish can fit side by side in the tank.
Part B: Fill in the Blank
Write the correct answer on each line.
1. Two rulers placed end to end measure 24 inches.
Each ruler is 12 inches long. 12 + 12 = 24 inches.
2. A bike is about 5 feet long.
A bicycle is about 5 feet long. Feet is the appropriate unit for measuring a bike.
3. If a snake is 36 inches long, that equals 3 feet.
36 ÷ 12 = 3. Since there are 12 inches in a foot, 36 inches equals 3 feet.
4. A train is much longer than a car.
A train has many cars connected together, making it much longer than a single car.
5. To measure something very small, use centimeters instead of inches.
Centimeters are smaller than inches, so they give a more precise measurement for very small objects.