Fractions on a Number Line — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. In Grade 3, if a number line from 0 to 1 has 5 equal parts, the denominator of each unit fraction is 5.
Five equal partitions of 0 to 1 give a denominator of 5, making unit fraction 1/5 in Grade 3.
2. In Grade 3, to plot 2/5 on a number line, count 2 equal jumps of 1/5 from 0.
2/5 means two jumps of 1/5 from 0, landing on the second tick of a fifths line in Grade 3.
3. In Grade 3, a fraction equivalent to 1/2 on a line split into 4 equal parts is 2/4.
2/4 reduces to 1/2 and both land at the midpoint of 0 and 1 in Grade 3.
4. In Grade 3, a fraction equivalent to 1/2 on a line split into 6 equal parts is 3/6.
3/6 equals 1/2 because both mark the midpoint of 0 and 1 in Grade 3.
5. In Grade 3, the unit fraction on a number line partitioned into 8 equal parts from 0 to 1 is 1/8.
Eight equal parts make eighths, so the unit fraction is 1/8 in Grade 3.
6. In Grade 3, to plot 3/4 on an unmarked number line, first partition 0 to 1 into 4 equal parts.
The denominator 4 means the whole is split into 4 equal parts for plotting 3/4 in Grade 3.
7. In Grade 3, a fraction equivalent to 1 on a line split into thirds is 3/3.
3/3 uses all three parts of the whole, which equals 1 on the number line in Grade 3.
8. In Grade 3, on a number line split into 8 equal parts, the fraction 4/8 equals 1/2.
4/8 reduces to 1/2, and both land at the midpoint of 0 and 1 in Grade 3.
9. In Grade 3, to plot 2/3 on an unmarked line, split 0 to 1 into 3 equal parts, then count 2 jumps.
2/3 means two jumps of 1/3 from 0, landing on the second tick in Grade 3.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Number line split into 4 equal parts, unit fraction
→ 1/4
1/4
Number line split into 6 equal parts, unit fraction
→ 1/6
1/6
Fraction equivalent to 1/2 on a fourths line
→ 2/4
2/4
Fraction at the whole on a thirds line
→ 3/3
3/3
In Grade 3, fourths give 1/4, sixths give 1/6, 2/4 equals 1/2, and 3/3 equals one whole on the number line.