Measuring Lengths — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Pencil A is 5 inches. Pencil B is 7 inches. Pencil B is longer.
Pencil B is 7 inches and Pencil A is 5 inches. Since 7 > 5, Pencil B is longer.
2. A crayon is 4 paper clips long. A marker is 6 paper clips long. The crayon is 2 paper clips shorter.
6 - 4 = 2, so the crayon is 2 paper clips shorter than the marker.
3. A ribbon is 9 inches long. A string is 5 inches long. The ribbon is 4 inches longer.
9 - 5 = 4, so the ribbon is 4 inches longer than the string.
4. Three crayons measure 3 inches, 6 inches, and 2 inches. The longest is 6 inches.
Comparing 3, 6, and 2, the greatest number is 6, so the longest crayon is 6 inches.
5. A straw is 8 cubes long. A spoon is 5 cubes long. The straw is 3 cubes longer.
8 - 5 = 3, so the straw is 3 cubes longer than the spoon.
6. Toy A is 10 inches. Toy B is 10 inches. They are the same length.
Both toys measure 10 inches, so they are the same length.
7. A book is 7 paper clips long. A folder is 9 paper clips long. The book is shorter.
7 < 9, so the book at 7 paper clips is shorter than the folder at 9 paper clips.
8. Three sticks measure 4 cubes, 7 cubes, and 2 cubes. The shortest is 2 cubes.
Comparing 4, 7, and 2, the smallest number is 2, so the shortest stick is 2 cubes.
9. A paintbrush is 6 inches. A pencil is 8 inches. The pencil is 2 inches longer.
8 - 6 = 2, so the pencil is 2 inches longer than the paintbrush.
Part B: Match
Draw a line from each item on the left to the correct answer on the right.
1.
measuring with paper clips
→ nonstandard unit
9 inches
measuring with a ruler
→ standard unit
nonstandard unit
shorter than 6 inches
→ 4 inches
4 inches
longest: 4 in, 9 in, 7 in
→ 9 inches
standard unit
Paper clips are a nonstandard unit. A ruler measures in standard units. 4 inches is shorter than 6 inches. Among 4, 9, and 7 inches, 9 inches is the longest.