This grade 1 measuring worksheet answer key solves all 23 problems of the measuring length worksheet step by step.
Use this answer key to check each problem. Every answer shows the steps in short sentences, so a parent or teacher can explain why a ribbon is longer or why the cubes must touch. Pictures show the correct counts.
Grade 1 Measuring Worksheet Answer Key: problems 1–5
Problem 1: Longer ribbon
Both ribbons start at the same line. The red ribbon reaches farther.
The longer ribbon is the red ribbon.
Problem 2: Shorter crayon
The green crayon stops sooner than the orange crayon.
The shorter crayon is the green crayon.
Problem 3: Longest rope
Rope A reaches the farthest. Rope B stops first. Rope C is in the middle.
The longest rope is Rope A.
Problem 4: Shortest pencil
The violet pencil stops first. The other two reach farther.
The shortest pencil is the violet pencil.
Problem 5: Order three ribbons
Blue stops first, so blue is the shortest. Green reaches farthest, so green is the longest. Orange is in the middle.
The order is blue, orange, green.
Grade 1 Measuring Worksheet Answer Key: problems 6–10
Problem 6: Same length
Stick A and Stick C end at the same place. Stick B is longer and Stick D is shorter.
The two sticks are A and C.
Problem 7: Count the cubes
Count the cubes one at a time: 1, 2, 3, 4, 5, 6, 7.
The pencil is 7 cubes long.
Problem 8: Count the paper clips
Count the paper clips one at a time: 1, 2, 3, 4, 5.
The crayon is 5 paper clips long.
Problem 9: Measure the key
Count the cubes under the key: 1, 2, 3, 4.
The key is 4 cubes long.
Problem 10: Fill in the blank
Count by ones: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.
The straw is 10 cubes long.
Grade 1 Measuring Worksheet Answer Key: problems 11–15
Problem 11: Find the gap
There are gaps between the cubes. Gaps leave out part of the length, so the count would be too small.
Correct way: lay the cubes so they touch. The ribbon is 6 cubes long.
Problem 12: Find the overlap
The cubes overlap. Some of the length is counted twice, so the count would be too big.
Correct way: lay the cubes end to end so they only touch. The ribbon is 5 cubes long.
Problem 13: Wrong starting spot
The first cube does not start at the left end of the pencil. The last cube sticks out past the right end.
Correct way: put the first cube at the very start of the pencil. Then the pencil is 6 cubes long.
Problem 14: Compare with cubes
5 is less than 8, so the marker needs fewer cubes.
The shorter object is the marker.
Problem 15: Order by cubes
The numbers are 12, 7, and 4. The biggest number is the longest object.
The order is toy car, book, eraser.
Grade 1 Measuring Worksheet Answer Key: problems 16–20
Problem 16: Use the string
The string is as long as the desk. The bookshelf is longer than the string.
So the bookshelf is longer than the desk.
Problem 17: Two scarves
Mia’s scarf is shorter than the rope. The rope is shorter than Noah’s scarf. So Noah’s scarf is longer than both.
Noah’s scarf is longer.
Problem 18: Small cubes and big blocks
The table is 12 small cubes long. It is only 6 big blocks long.
The big block covers more of the table, so it needs fewer. The big block is the longer unit.
Problem 19: Toy car and truck
Start with the car: 7 cubes. Add 3 more cubes.
\(7 + 3 = 10\)
The truck is 10 cubes long.
Problem 20: Three ribbons
The numbers are 6, 9, and 11. Put them in order from the smallest: 6, 9, 11.
The order is red, green, blue.
Grade 1 Measuring Worksheet Answer Key: problems 21–23
Problem 21: Could it be?
The eraser must be less than 8 cubes long.
- 3 cubes is less than 8: yes.
- 8 cubes is the same as the pencil: no.
- 10 cubes is longer than the pencil: no.
The answers are yes, no, no.
Problem 22: Out of cubes
The first row used 5 cubes. The second row used 5 more cubes.
\(5 + 5 = 10\)
The book is 10 cubes long.
Problem 23: Garden flowers
(a) The numbers in order from the biggest are 14, 11, and 9. The order is sunflower, daisy, tulip.
(b) Count how much more 14 is than 9.
\(14 – 9 = 5\)
The sunflower is 5 cubes taller.
How to use this grade 1 measuring worksheet answer key
Read this grade 1 measuring worksheet answer key after trying each problem yourself, and redo any problem you missed.
See every chapter on the Grade 1 math page.