This grade 2 length worksheet answer key solves all 22 problems of the measuring length worksheet step by step.
Here are the full worked solutions for the 22 length problems. Check each ruler reading and each equation, then fix any mistakes. Notice the unit in every answer.
Grade 2 Length Worksheet Answer Key: problems 1–5
Problem 1: Read the inch ruler
The pencil starts at 0 and ends at 7. The length is 7 inches.
Problem 2: Read the centimeter ruler
The ribbon starts at 0 and ends at 9. The length is 9 centimeters.
Problem 3: Pick the tool
- A crayon is short: inch ruler.
- A bookshelf of 3 feet fits a yardstick: yardstick.
- The playground is very long: measuring tape.
Problem 4: Choose the unit
- A stamp is tiny: inches.
- A car is long: feet.
- A paper clip is tiny: inches.
Problem 5: Measure twice
A centimeter is a shorter unit than an inch. It takes more short units to cover the same length. So the number is bigger: 25 is bigger than 10.
Grade 2 Length Worksheet Answer Key: problems 6–10
Problem 6: How much longer
Blue is longer. \(13 – 8 = 5\). Blue is 5 inches longer.
Problem 7: Estimate with paper clips
Each paper clip is about 1 inch, so 7 paper clips are about 7 inches. The pencil is about 7 inches long.
Problem 8: Start at 2
The marker starts at 2 and ends at 7. Count the inches between: 3, 4, 5, 6, 7 is 5 steps. Or \(7 – 2 = 5\). The marker is 5 inches long.
Problem 9: Add on a number line
Jump 30 to the right from 45. \(45 + 30 = 75\). The rope is now 75 feet long.
Problem 10: Subtract on a number line
Jump 40 to the left from 70. \(70 – 40 = 30\). The string is now 30 inches long.
Grade 2 Length Worksheet Answer Key: problems 11–15
Problem 11: Write an equation
\(45 – 20 = ?\). Since \(45 – 20 = 25\), there are 25 feet left to paint.
Problem 12: Order the lengths
Compare the tens first: 18, then 22 and 25, then 31. Check 22 is less than 25. Order: 18 cm, 22 cm, 25 cm, 31 cm.
Problem 13: Is it reasonable
No. 70 inches is almost as tall as a grown-up. A new pencil is about 7 inches long. Diego should say 7 inches.
Problem 14: Find the missing part
Subtract the known piece from the whole: \(60 – 35 = 25\). Check: \(35 + 25 = 60\). The other piece is 25 feet long.
Problem 15: Three jumps
\(20 + 30 = 50\) and \(50 + 15 = 65\). She hops 65 feet in all.
Grade 2 Length Worksheet Answer Key: problems 16–20
Problem 16: Hallway and gym
\(48 – 35 = 13\). The hallway is 13 meters longer.
Problem 17: Garden rows
Add: \(36 + 29 = 65\). Check: 36 + 30 = 66, then take away 1 to get 65. There are 65 feet of rows.
Problem 18: Race on the track
Find the distance between 58 and 74. \(74 – 58 = 16\). Noah runs 16 meters farther.
Problem 19: Gift ribbon
\(90 – 45 = 45\), then \(45 – 30 = 15\). There are 15 cm left.
Problem 20: Feet and inches
Yes. One foot is 12 inches, and \(12 + 12 = 24\), so 2 feet is 24 inches. The inch is a shorter unit, so the number is bigger. Both are right.
Grade 2 Length Worksheet Answer Key: problems 21–22
Problem 21: Two ribbons
- \(47 + 28 = 75\). Together: 75 inches.
- \(47 – 28 = 19\). Mei’s ribbon is 19 inches longer.
Problem 22: Train track
\(48 + 27 = 75\), then \(75 – 15 = 60\). The track is now 60 inches long.
How to use this grade 2 length worksheet answer key
Read this grade 2 length worksheet answer key after trying each problem yourself, and redo any problem you missed.
See every chapter on the Grade 2 math page.
