Comparing Lengths — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. A book is 7 cubes. A pencil is 3 cubes. How many cubes longer is the book?
A) 4 cubes
B) 10 cubes
C) 3 cubes
D) 7 cubes
Seven minus three equals four so the book is four cubes longer.
2. Lily's ribbon is 6 clips. Sam's ribbon is 9 clips. Whose is longer?
A) Both equal
B) Sam's ribbon
C) Lily's ribbon
D) Neither one
Nine clips is more than six so Sam's ribbon stretches longer overall.
3. Two crayons are each 4 cubes long. End to end, how long together?
A) 6 cubes
B) 4 cubes
C) 8 cubes
D) 2 cubes
Two crayons of four cubes each combine to eight cubes total length.
4. A shoe was 8 cubes. After growing, it is 11 cubes. How many cubes did it grow?
A) 8 cubes
B) 11 cubes
C) 19 cubes
D) 3 cubes
Eleven minus eight equals three so the shoe grew three cubes longer.
Part B: Fill in the Blank
Write the correct answer on each line.
1. If a 5-cube object and a 4-cube object are placed end to end, total is 9 cubes.
Combining five cubes plus four cubes gives a total of nine cubes.
2. A 10-clip rope cut in half makes two pieces each 5 clips long.
Cutting ten clips evenly in half creates two equal five-clip pieces.
3. If pencil A is longer than B and B is longer than C, then A is longer than C.
Length order passes through so the longest beats the shortest by comparison.
4. Three sticks of 2 cubes each line up to 6 cubes total.
Three groups of two cubes combine to make six total cubes long.
5. A 12-cube path with 4 cubes walked has 8 cubes left.
Twelve minus four equals eight cubes remaining on the path ahead.