Grade 2 Math Practice Test: Measuring Length in Inches and Centimeters
- Measuring Length in Inches and Centimeters
- 10 questions
- 12 minutes
Line up the object with the 0 mark on the ruler. If it starts at a different number, subtract to find the length.
Tap an option to mark your answer. You can change your mind, or tap the same option again to leave the question blank. The correct answers and explanations appear when you finish the test.Tap an option to answer; tap it again to leave the question blank.
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Question 1
A crayon is placed above a ruler.
How long is the crayon?
Correct answer: A
The crayon starts at 0 and ends at the 4 mark, so it is 4 inches long.
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Question 2
A piece of yarn is placed above a ruler.
How long is the yarn?
Correct answer: C
The yarn starts at 2 and ends at 7, not at 0. 7 − 2 = 5 centimeters. Reading only the end number gives 7, which is the trap.
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Question 3
About how long is a new pencil?
Correct answer: D
A new pencil fits in your hand, so about 7 inches is reasonable. 7 feet is taller than a person.
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Question 4
About how tall is a classroom door?
Correct answer: D
A door is a little taller than a grown-up, which is about 2 meters. 2 centimeters is shorter than your finger.
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Question 5
Ali measures his desk in inches and then in feet. Which is true?
Correct answer: C
An inch is a smaller unit than a foot, so it takes more inches to cover the same desk. The desk itself has the same length either way.
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Question 6
A ribbon is 45 cm long. Jess cuts off 18 cm. How long is the ribbon now?
Correct answer: B
Cutting makes it shorter, so subtract: 45 − 18 = 27 cm. The answer 63 adds instead.
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Question 7
Two sticks are put end to end. One is 26 inches long and the other is 38 inches long. How long are they together?
Correct answer: C
Add the lengths: 26 + 38 = 64 inches. The ones make 14, so regroup 1 ten. Forgetting that ten gives 54.
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Question 8
A red string is 52 cm long. A blue string is 35 cm long. How much longer is the red string?
Correct answer: A
Subtract to compare: 52 − 35 = 17 cm. Check: 35 + 17 = 52.
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Question 9
The class measured 8 pencils to the nearest inch:
4, 5, 5, 6, 6, 6, 6, 7
They will make a line plot with one X for each pencil. Which length will have the most X marks?
Correct answer: B
The length 6 appears 4 times, more than any other length. 5 inches appears only 2 times.
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Question 10
Plant Heights Plant Height Bean 14 cm Sunflower 31 cm Pea 9 cm How much taller is the sunflower than the bean plant?
Correct answer: D
Subtract the heights: 31 − 14 = 17 cm. The answer 22 compares the sunflower with the pea plant instead.
Questions you leave blank are not counted as wrong.
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