1st Grade Measuring Length Worksheet Solutions (PDF)
This measuring length answers for 1st Grade covers measuring length (Common Core 1.MD.A.1, 1.MD.A.2), with a free PDF to print.
This answer key gives a short explanation for every problem in the Grade 1 measuring length worksheet. Check the counts, then read why each object is longer or shorter.
Grade 1 · Common Core State Standards: 1.MD.A.1, 1.MD.A.2
Measuring length answers: exercises 1 to 10
Exercise 1 – Longer pencil
The red pencil reaches farther, so it is longer. Red
Exercise 2 – Shorter object
The ribbon ends sooner than the rope. The shorter object is the ribbon.
Exercise 3 – Longest of three
The fork covers 11 units. The other two cover 9 and 8. The longest is the fork.
Exercise 4 – Shortest of three
The eraser stops first. The shortest object is the eraser.
Exercise 5 – Order by length
The leaf covers 5, the feather 8, and the stick 12.
Leaf, feather, stick
Exercise 6 – Count the cubes
There are 4 cubes under the key. 4 cubes
Exercise 7 – Length of a spoon
Count the cubes from the left end: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. The spoon is 10 cubes long.
Exercise 8 – Find the gap
There are gaps between his cubes. Cubes must touch, end to end, with no gaps.
He left gaps.
Exercise 9 – Wrong start
Her row does not start at the left end of the book. The first cube sits one cube too far to the right.
She must start at the left end.
Exercise 10 – Whose is longer?
Compare the numbers: \(8 > 5\). Sofia’s count is greater, so her bookmark is longer.
Sofia’s bookmark
Exercises 11 and up
Exercise 11 – Big and small cubes
The small cubes are shorter than the big cubes. It takes more small cubes to cover the same ribbon.
The units are different sizes.
Exercise 12 – Measure the toothbrush
Count the cubes in groups: 5, then 10, then 12. 12 cubes
Exercise 13 – Complete the sentence
There are 6 cubes. The comb is 6 cubes long.
Exercise 14 – Measure two markers
\(8 > 6\), so the pen is longer. The pen
Exercise 15 – Compare without touching
Ana’s is longer than Ben’s, and Ben’s is longer than Cy’s. So Cy’s scarf is the shortest.
Cy’s scarf
Exercise 16 – Longest of three clues
Blue is shorter than red, and red is shorter than yellow. So yellow is the longest.
The yellow string
Exercise 17 – Two parts of a path
Add the two parts: \(5 + 3 = 8\).
8 blocks
Exercise 18 – Measuring desks
The crayons are the same size. \(12 > 9\), so Mei’s desk is longer.
Mei’s desk
Exercise 19 – Three animal toys
The lizard is the longest. The worm is the shortest.
Lizard, snake, worm
Exercise 20 – Exact ribbon
Look for the number 9. Ribbon A is 7 and Ribbon C is 11.
Ribbon B
Exercise 21 – Which is longer?
\(10 > 6\), so the crayon is longer. The shorter object is the pencil.
The crayon is longer. The pencil is 6 paper clips long.
Exercise 22 – Snake race
The counts are 7, 12, and 9. The largest is 12. The smallest is 7.
Longest: Slim. Shortest: Sid. Order: Sid, Squiggle, Slim.
Key facts behind this measuring length answers
- Length is how long an object is from one end to the other.
- Line up the left ends to tell which of two objects is longer.
- Units must be the same size, laid end to end, with no gaps and no overlaps.
- The count of units is the length, and the unit name goes with the number.
- If A is longer than B and B is longer than C, then A is longer than C.
How to use this measuring length answers
Cover each solution, solve the exercise again, then uncover it and compare every line. If your answer differs, find the first step that changed and redo the exercise from there.
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All Grade 1 chapters: Grade 1 math.
