OGM.4.NF
Open Global Math Standards 2026™ · 3rd Grade
Number & Operations—Fractions: Conceptualization, Equivalence, Number Line, and Operations
Grade3rd Grade
SubjectMath
Levelstrand
Child standards (4)
- OGM.4.NF.1Understand a unit fraction 1/b as one part of a whole partitioned into b equal parts; understand non-unit fractions a/b as the composition of a parts of size 1/b (focusing on denominators 2, 3, 4, 5, 6, 8, 10); find fractions of discrete sets of objects and continuous area models.
- OGM.4.NF.2Represent fractions on a number line diagram by partitioning intervals from 0 to 1 (and beyond) into equal sub-intervals; recognize fractions as numbers representing distance from zero (including counting up and down in tenths and recognizing tenths as division by 10).
- OGM.4.NF.3Identify and generate equivalent fractions using visual models and number lines; express whole numbers as fractions (e.g., 3 = 3/1, 4/4 = 1) and recognize that fractions are equivalent when they designate the same size share or location on a number line.
- OGM.4.NF.4Compare two fractions with the same numerator or the same denominator by reasoning about unit sizes (recognizing comparisons are valid only for the same whole); record comparisons using >, =, and <; add and subtract fractions with identical denominators within one whole.