TOPIC 4 · GRADES 3–4 FOUNDATION
Compare and Order Fractions
Use equal wholes, benchmark fractions, and number lines to compare sizes.
MA.3.FR.2.1 · MA.4.FR.1.4BIG IDEA
Fractions farther right on the same number line are greater. With equal denominators compare numerators; with equal numerators, smaller denominators make larger pieces.
LEARN IT WITH A STORY
Which deli sandwich has more left?
Two equal-size sandwiches make a fair comparison. One has 3/4 left and the other has 5/8 left. Matching the cuts reveals that 3/4 equals 6/8, so 3/4 is greater.
- 1Make sure the wholes are the same size.
- 2Use a benchmark such as 1/2 or rename with equal-size pieces.
- 3Compare positions on a number line or the amount covered—not just the digits.
Compare 2/3 and 3/4 using two equal-length sandwich bars.
FRACTION WORD BANK
Tap a word, then turn the card
Say the word aloud before revealing its meaning. Tap again to return to the word.
WATCH AND NOTICE
Comparing fractions | Khan Academy
Pause when a model appears. Name the whole, denominator, numerator, and fraction before the teacher explains it.
Open on YouTube ↗WHAT TO KNOW
- Always compare fractions referring to the same-size whole.
- Use 0, 1/2, and 1 as helpful benchmarks.
- Cross-products can check a comparison later, but visual size reasoning should come first.
WATCH OUT
A larger denominator does not mean a larger fraction when numerators match.
TRY IT
Compare two fractions using bars and confirm the result on a number line.