Subtract from a teen number, crossing ten
2 printable PDFs, each with its answer key. These sheets practice subtracting a 1-digit number from a teen number when the answer drops below 10, like 13 − 5.
Sheet 1
Sheet 2
What's on the sheet
36 problems written across, with a box for each answer, on US Letter paper, with a box for the score. Some from sheet 1:
- 14 − 7 = 7
- 15 − 8 = 7
- 13 − 7 = 6
- 16 − 8 = 8
Helping at home
In 1st grade, children subtract within 20, and the facts that cross back over ten are the hardest. A strong strategy is to go back to ten first: for 13 − 5, take 3 to get to 10, then 2 more to get to 8.
Many children count back one at a time and land one off, often by counting the starting number. Others subtract the digits they see and write 12 for 13 − 5 (5 − 3 = 2).
One way to help at home: think addition. "5 plus what makes 13?" A child who knows 5 + 8 = 13 knows 13 − 5 = 8. Ten frames, or an egg carton with 10 spaces plus a few extra, show the teen number as 10 and some more. Practice a few facts at a time, every day.
Practice the same skill as a game
In larkit, your child plays this skill on screen, with a second try and a hint when a problem is hard. Free to try, no ads.
Play it freeWant more sheets?
The free sheets above need no email. If you'd like extras, we can send them.
Common Core: 1.OA.C.6