Common Core math standards, K–5
Every Common Core mathematics standard from Kindergarten to Grade 5, with free printable worksheets aligned to each one. Each standard shows the official text, a plain-language explanation, and the practice we have for it.
Everything here is free. No account, no email, no paywall, and no advertising is shown to children. Teachers, librarians and district staff are welcome to link to any page on this site.
108
standards listed
81
with free worksheets
868
worksheets aligned
Kindergarten math standards
21 standards · 12 with free worksheets
K.CC.A.1 · K.CC.A.2 · K.CC.A.3 · K.CC.B.4 · …
Grade 1 math standards
15 standards · 12 with free worksheets
1.OA.A.1 · 1.OA.B.3 · 1.OA.B.4 · 1.OA.C.5 · …
Grade 2 math standards
15 standards · 14 with free worksheets
2.OA.A.1 · 2.OA.B.2 · 2.OA.C.3 · 2.OA.C.4 · …
Grade 3 math standards
22 standards · 18 with free worksheets
3.OA.A.1 · 3.OA.A.2 · 3.OA.A.3 · 3.OA.A.4 · …
Grade 4 math standards
20 standards · 15 with free worksheets
4.OA.A.1 · 4.OA.A.3 · 4.OA.B.4 · 4.OA.C.5 · …
Grade 5 math standards
15 standards · 10 with free worksheets
5.OA.A.1 · 5.OA.B.3 · 5.NBT.A.3 · 5.NBT.A.4 · …
How alignment is decided
Worksheets are matched to a standard by what the individual sheet teaches, using an explicit list of topic terms per standard. We deliberately do not match on the grade a worksheet is filed under, because a catalogue grade is not a standards alignment — the standard assigns the grade. Where we have no confident match, the standard is listed without worksheets rather than being padded with loosely related ones.