OGM.5.NBT
Open Global Math Standards 2026™ · 4th Grade
Number & Operations in Base Ten (Whole Numbers & Place Value Systems)
Grade4th Grade
SubjectMath
Levelstrand
Child standards (6)
- OGM.5.NBT.1Recognize, read, write, compare, and order multi-digit whole numbers up to billions using base-ten numerals, number names, and expanded notation; demonstrate that a digit in any place represents 10 times the value of the place to its right and 1/10 of the value of the place to its left.
- OGM.5.NBT.2Round multi-digit whole numbers to any designated place value (including nearest 10, 100, 1 000, or 100 000) and utilize compatible numbers and estimation strategies to assess the reasonableness of computational results in mathematical and real-world financial contexts.
- OGM.5.NBT.3Fluently add and subtract multi-digit whole numbers up to multi-digit standard algorithms with regrouping across zeros, using mental calculation, written column layouts, and digital computational tools.
- OGM.5.NBT.4Multiply whole numbers of up to 4 digits by a 1-digit number and 2-digit numbers by 2-digit numbers (including powers of 10 and perfect squares through 15 × 15) using area models, arrays, partial products, distributive property, mental calculation shortcuts, and the standard algorithm.
- OGM.5.NBT.5Find whole-number quotients and remainders with up to four-digit dividends and one- or two-digit divisors using area models, partial quotients, the division algorithm (Euclidean division: a = bq + r), and interpret remainders in mathematical and real-world contexts.
- OGM.5.NBT.6Read, write, and convert Roman numerals (up to C / 100 or up to 3 000) to standard base-ten decimal numerals and explore the historical development of zero, place value, and unified systems of measurement.