Fractions on a Number Line — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Grade 3: Place 1/4, 1/2, 3/4 on a fourths number line in order from 0 to 1. Which order is correct?
A) 1/4, 1/2, 3/4
B) 3/4, 1/2, 1/4
C) 1/2, 1/4, 3/4
D) 1/4, 3/4, 1/2
From 0 to 1, fractions grow: 1/4 < 1/2 < 3/4 on a fourths number line.
2. Grade 3: A number line shows 2/8 and 6/8 marked. Which fraction lies exactly halfway between them?
A) 4/8
B) 3/8
C) 5/8
D) 7/8
Halfway between 2/8 and 6/8 is 4/8 because (2+6)/2 = 4 eighths.
3. Grade 3: Place 1/3, 2/3, and 3/3 in order from 0 to 1. Which fraction sits at the whole?
A) 3/3
B) 1/3
C) 2/3
D) 2/6
Three thirds is one whole, so 3/3 sits at 1 on the number line.
4. Grade 3: A sixths number line shows 1/6 and 5/6. The missing fraction at the midpoint is?
A) 3/6
B) 2/6
C) 4/6
D) 6/6
Midpoint of 1/6 and 5/6 is 3/6, which equals 1/2 on the number line.
Part B: Fill in the Blank
Write the correct answer on each line.
1. Grade 3: Place 1/4, 2/4, 3/4 on a fourths line. The middle fraction is 2/4.
Two fourths sits between 1/4 and 3/4, the middle of the three points.
2. Grade 3: A line shows 2/8 and 6/8. The missing midpoint fraction is 4/8.
Halfway between 2/8 and 6/8 is 4/8 on the eighths number line.
3. Grade 3: Order 1/6, 3/6, 5/6 from 0. The fraction closest to 1 is 5/6.
Five sixths sits one sixth from 1, closer to 1 than 3/6 or 1/6.
4. Grade 3: Between 1/3 and 1 on a thirds line, the missing fraction is 2/3.
One step of 1/3 past 1/3 lands on 2/3, the missing point before 1.
5. Grade 3: Place 1/8, 4/8, 7/8 on an eighths line. The point at the midpoint of 0 and 1 is 4/8.
Four eighths equals 1/2, the midpoint of 0 and 1 on the number line.