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Grade 4 Math · World 6: Fraction Bakery · Level 59
Make Them Match to Compare
Compare with a common denominator or numerator.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 59
- Compare 3 fourths and 5 eighths. They have different parts, so make the parts match. Cut each fourth in half: 3 fourths is 6 eighths.
- Now both are eighths: 6 eighths is more than 5 eighths. So 3 fourths is greater.
- You can match the tops instead. 2 fifths is 4 tenths. 4 tenths and 4 twelfths both have 4 parts, and tenths are bigger, so 2 fifths is greater.
- Always compare parts of the same whole. 3 fourths of a small pizza might be less than 5 eighths of a giant one!
Georgia's K-12 Mathematics Standards:
- 4.NR.4.3 — Compare two fractions with different numerators and/or different denominators by flexibly using a variety of tools and strategies and recognize that comparisons are valid only when the two fractions refer to the same whole.