Measuring Lengths — Answer Key
Part A: Multiple Choice
Circle the letter of the best answer.
1. A pencil is 6 inches long. A crayon is 3 inches long. If you place them end to end, how long are they together?
A) 3 inches
B) 6 inches
C) 9 inches
D) 12 inches
Placing them end to end means adding their lengths: 6 + 3 = 9 inches.
2. Rope A is 4 paper clips long. Rope B is 2 paper clips longer than Rope A. Rope C is 3 paper clips longer than Rope B. How long is Rope C?
A) 6 paper clips
B) 7 paper clips
C) 9 paper clips
D) 10 paper clips
Rope B = 4 + 2 = 6 paper clips. Rope C = 6 + 3 = 9 paper clips.
3. Which of these is NOT true? A ribbon is 10 inches. A string is 7 inches. A wire is 10 inches.
A) The ribbon and wire are the same length.
B) The string is shorter than the ribbon.
C) The wire is shorter than the string.
D) The ribbon is 3 inches longer than the string.
The wire is 10 inches and the string is 7 inches, so the wire is longer, not shorter. This statement is NOT true.
4. Sam measured a book with cubes. It was 8 cubes long. Each cube is 1 inch. How many inches long is the book?
A) 4 inches
B) 7 inches
C) 8 inches
D) 9 inches
Each cube equals 1 inch, so 8 cubes x 1 inch = 8 inches.
Part B: Fill in the Missing Measurement
Write the missing number on each line.
1. A straw is 3 inches longer than a button. The button is 4 inches long. The straw is 7 inches long.
The straw is 3 inches longer than the 4-inch button: 4 + 3 = 7 inches.
2. Three sticks are 5 cubes, 9 cubes, and 7 cubes. Put them in order from shortest to longest: 5, 7, 9.
In order from shortest to longest: 5, 7, 9. The middle value is 7 cubes.
3. A marker is 6 inches long. A pen is 2 inches shorter than the marker. Together they are 10 inches long.
The pen is 6 - 2 = 4 inches. Together: 6 + 4 = 10 inches.
4. A shoe is 5 paper clips long. Each paper clip is 2 inches. The shoe is 10 inches long.
5 paper clips x 2 inches each = 10 inches.
5. Four ribbons measure 3 inches, 8 inches, 6 inches, and 1 inch. The difference between the longest and shortest is 7 inches.
The longest is 8 inches and the shortest is 1 inch. 8 - 1 = 7 inches.