Free Add within 100 and 10 More, 10 Less
Two-digit addition that makes sense: add tens to tens and ones to ones with base-ten blocks, make a new ten, find 10 more and 10 less on hundreds chart pieces, subtract tens and solve word problems within 100.
All 3 worksheets in color and black & white, with the answer key · 11 pages, free to print.
Want the whole unit?
Add within 100 and 10 More, 10 Less — Ghost Friends
| What you get | This free sample | Full set |
|---|---|---|
| Worksheets | 3 | 10 |
| Pages in the file | 11 | 26 |
| Color + black & white | ✓ | ✓ |
| Answer key | ✓ | ✓ |
| Every skill in the unit | A taste | ✓ All of it |
| Fresh problems made for your order | — | ✓ |
- 3 free worksheets from the full set
- Color + black & white, with answer key
- Print as many copies as you need for your class
- Grade
- Grade 1
- In the file
- 3 worksheets in color, the same 3 in black & white, answer key · 11 pages
- Format
- PDF, US Letter (8.5 × 11 in)
- Standards
1.NBT.C.4Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10.
1.NBT.C.5Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count.
1.NBT.C.6Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90 (positive or zero differences), using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.
Free to print and share with your class. Want more practice on one topic? Every page comes from one of our full sets — follow the topic links below.
What's inside
- 10 More and 10 Less
- Add Ones
- Word Problems within 100
Every worksheet comes in color and in black & white, with an answer key at the end.
How to use these math worksheets
Use the reference page to teach or review, then pick the worksheets that fit your lesson. They work for small groups, morning work, centers and homework. The last page is a short assessment.
Skills practiced
More practice: first grade place value & hundreds chart worksheets · all first grade math worksheets
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