Worksheet directions

Grade 1 • Guided Practice • Work with your teacher or a partner. Discuss the model or strategy, then complete each problem.

Sample questions

1. A box has 76 crayons. Take away 3 tens. How many crayons remain? 76 - 30 = ___
2. Solve 27 + 15 by adding tens and ones. 27 + 15 = ___
3. Build 41 and take away one ten. 41 - 10 = ___
4. Write a story for 34 + 12 and solve it. 34 + 12 = ___
5. A shelf has 23 books. Add 4 tens. How many books now? 23 + 40 = ___
6. Solve 52 - 18. 52 - 18 = ___

See the preview for diagrams, answer spaces, and the complete layout.

Common Core connections

Source labels: 1.NBT.C.4–6. Review the learning goals below to check the fit for your class.

• 1.NBT.C.4 — Add within 100
• 1.NBT.C.5 — Mentally find 10 more or 10 less
• 1.NBT.C.6 — Subtract multiples of 10

Bring it into your lesson

Review the preview and question content above. Open the resource in Sparkclass to copy it to your Files and use it in your workspace. Check the resulting layout before sharing it with students.