December Math Worksheets — Grade 1
Grade 1 math worksheet: Add/Sub within 20 (strategies, fact families); Tens & ones / place value to 100 (intro); Measurement — length (nonstandard units); Mixed review (light) — 178 pages. Answer key included. A full month of printable math practice for grade 1: 40 worksheets — every sheet in two levels (Level 1 Easy and Level 2 Rigorous) — covering Add/Sub within 20 (strategies, fact families); Tens & ones / place value to 100 (intro); Measurement — length (nonstandard units); Mixed review (light). Every worksheet comes with its answer key — the keys are printed at the back of the package PDF, ready to print or share.
178 pages · Difficulty: mixed
One-time purchase · yours to keep · answer key included
$0.99 minimum — this item clears it on its own.
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- A full month of printable Math practice for grade 1
- 178 pages
- Answer key included
- PDF, print-and-go
- For morning work, classwork, homework, math centers, or sub plans
✅ Answer key included
- Instant PDF downloadPrintables are yours to keep
- Answer keys, markedEvery listing says if one is included
- Print & goReady for the printer
- Secure checkoutOne-time purchase, no subscription
Preview
Preview shows the first pages of the pack, exactly as they print. The full PDF includes every page plus the answer key.
Sample pages from the collection
Sample student pages, shown as they print (watermarked). The full PDF also includes the teacher guide and answer key for every lesson.
Highlights
- Grade
- Grade 1
- Subject
- Math
- Pages
- 178 · worksheet + answer key
- Answer key
- ✅ Included
Suggested use: morning work, classwork, homework, math centers, or sub plans
What students will learn
Students practice: Add/Sub within 20 (strategies, fact families); Tens & ones / place value to 100 (intro); Measurement — length (nonstandard units); Mixed review (light).
Classroom use
One license per teacher: print as many copies as you need for your own students and share through your class platform. Please don’t post the files publicly. License details.
Quick answers
What does this worksheet cover?
Grade 1 Math — Add/Sub within 20 (strategies, fact families); Tens & ones / place value to 100 (intro); Measurement — length (nonstandard units); Mixed review (light).
How many pages is the download?
178 pages.
Does it include an answer key?
Yes — an answer key is included.
How much does it cost?
$4.99 — a one-time purchase, yours to keep. No subscription.
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Addition Within 20

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