🥧
Grade 4 Math · World 6: Fraction Bakery · Level 57
Same Denominator, Same Numerator
Compare 3/8 and 5/8, and 2/3 and 2/5.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 57
- Compare 3 eighths and 5 eighths. Both are eighths, so the parts are the same size. 5 parts are more than 3 parts.
- Now compare 2 thirds and 2 fifths. Both are 2 parts. But thirds are bigger than fifths, because the whole is cut into fewer parts.
- Jamie and Kendra each have the same size pan of cornbread. Jamie eats 2 thirds, and Kendra eats 2 fifths. Jamie eats more!
- This only works for the same whole. Half of a small pizza is less than half of a large pizza!
Georgia's K-12 Mathematics Standards:
- 4.NR.4.2 — Compare two fractions with the same numerator or the same denominator by reasoning about their size and recognize that comparisons are valid only when the two fractions refer to the same whole.