48 printable practice pages aligned to CCSS.Math.1.OA. Every worksheet is free to download, free to copy for the classroom, and built around the same Common Core sub-skill from a slightly different angle.
Reviewed by the PrintSpark Kids editorial team · Updated July 2026
Bring focused, low-prep practice into your classroom or home with this Grade 1 worksheet on Adding within 10 (fluency). It targets the Addition within 20 strand of the Common Core …
Read More →Use this free Grade 1 math worksheet to help your child master Adding within 10 (fluency). It belongs to our Addition within 20 collection, aligns with CCSS.Math.1.OA, and is built…
Read More →Help students build fluency with Adding within 10 (fluency) using this Grade 1 printable from our Addition within 20 series. Aligned to CCSS.Math.1.OA, the page mixes routine compu…
Read More →Designed for Grade 1 learners, this printable explores Adding within 10 (fluency) through clear, scaffolded problems that grow in difficulty across the page so kids hit a stretch c…
Read More →Bring focused, low-prep practice into your classroom or home with this Grade 1 worksheet on Adding within 20 (no regrouping). It targets the Addition within 20 strand of the Common…
Read More →Bring focused, low-prep practice into your classroom or home with this Grade 1 worksheet on Adding within 20 (no regrouping). It targets the Addition within 20 strand of the Common…
Read More →This printable worksheet gives Grade 1 students focused practice on Adding within 20 (no regrouping), an essential building block within Addition within 20 and one of the milestone…
Read More →Bring focused, low-prep practice into your classroom or home with this Grade 1 worksheet on Adding within 20 (no regrouping). It targets the Addition within 20 strand of the Common…
Read More →Bring focused, low-prep practice into your classroom or home with this Grade 1 worksheet on Doubles facts. It targets the Addition within 20 strand of the Common Core math standard…
Read More →Bring focused, low-prep practice into your classroom or home with this Grade 1 worksheet on Doubles facts. It targets the Addition within 20 strand of the Common Core math standard…
Read More →Bring focused, low-prep practice into your classroom or home with this Grade 1 worksheet on Doubles facts. It targets the Addition within 20 strand of the Common Core math standard…
Read More →Designed for Grade 1 learners, this printable explores Doubles facts through clear, scaffolded problems that grow in difficulty across the page so kids hit a stretch challenge afte…
Read More →Bring focused, low-prep practice into your classroom or home with this Grade 1 worksheet on Doubles plus one. It targets the Addition within 20 strand of the Common Core math stand…
Read More →Help students build fluency with Doubles plus one using this Grade 1 printable from our Addition within 20 series. Aligned to CCSS.Math.1.OA, the page mixes routine computation, sh…
Read More →This printable worksheet gives Grade 1 students focused practice on Doubles plus one, an essential building block within Addition within 20 and one of the milestone skills inside t…
Read More →Bring focused, low-prep practice into your classroom or home with this Grade 1 worksheet on Doubles plus one. It targets the Addition within 20 strand of the Common Core math stand…
Read More →Help students build fluency with Make ten strategy using this Grade 1 printable from our Addition within 20 series. Aligned to CCSS.Math.1.OA, the page mixes routine computation, s…
Read More →Bring focused, low-prep practice into your classroom or home with this Grade 1 worksheet on Make ten strategy. It targets the Addition within 20 strand of the Common Core math stan…
Read More →Bring focused, low-prep practice into your classroom or home with this Grade 1 worksheet on Make ten strategy. It targets the Addition within 20 strand of the Common Core math stan…
Read More →Help students build fluency with Make ten strategy using this Grade 1 printable from our Addition within 20 series. Aligned to CCSS.Math.1.OA, the page mixes routine computation, s…
Read More →This printable worksheet gives Grade 1 students focused practice on Adding three single-digit numbers, an essential building block within Addition within 20 and one of the mileston…
Read More →Help students build fluency with Adding three single-digit numbers using this Grade 1 printable from our Addition within 20 series. Aligned to CCSS.Math.1.OA, the page mixes routin…
Read More →Help students build fluency with Adding three single-digit numbers using this Grade 1 printable from our Addition within 20 series. Aligned to CCSS.Math.1.OA, the page mixes routin…
Read More →Bring focused, low-prep practice into your classroom or home with this Grade 1 worksheet on Adding three single-digit numbers. It targets the Addition within 20 strand of the Commo…
Read More →This collection focuses entirely on addition within 20 for Grade 1. Every printable targets the Common Core standard CCSS.Math.1.OA, and we built four practice variants per sub-skill: a straight practice worksheet, a word-problem set, a fluency drill, and a stretch challenge. Same idea, four different ways in.
The variants matter. Kids who meet a skill from several angles hold onto it longer than kids who do five rounds of the same worksheet. A child who runs a fluency drill on Monday, a word-problem set on Wednesday, and a challenge page on Friday is practicing the exact same Common Core sub-skill three ways, and locking it in.
For families using these at home: pick one page per session, set a quiet 10 to 15 minute window, and sit with your child to talk through the tricky problems when they finish. For teachers: this collection slots cleanly into morning math, a small-group rotation, fast-finisher work, or a homework folder. The same one-page format works in all of those contexts.
If the practice here feels too easy or too hard, slide one grade up or down from the Addition within 20 hub. The same skill shows up at multiple grade levels, so you can pull the version that matches your student's current edge.