About this worksheet
Thirty one-digit problems stacked in columns, with a time box and a score out of 30. Every sum lands between 10 and 18, so each one crosses 10.
Those bridging problems are the ones children are slowest on, which makes this a focused five-minute warm up. A child who counts on their fingers for 8 + 7 can try making 10 first (8 + 2, then 5 more) and usually speeds up quickly.
What students will practice
- Add within 20 fluently
- Add one-digit numbers that cross 10
- Use make-10 to add faster
Details
- Grade level
- Grade 2
- Subject
- Math · Addition
- Standard
- CCSS 2.OA.B.2
- Pages
- 1
- Format
- PDF · US Letter and A4 included
- License
- Free for classroom use · Attribution appreciated
- Last updated
- October 13, 2026
