Printable Subtracting 10 Flash Cards
Subtracting 10 takes teen numbers apart: 17 − 10 = 7 because removing the ten empties the tens column and the ones stay put. These fold-over flashcards cover 11 − 10 through 22 − 10.
How to Use These Flash Cards
Read the minuend's structure aloud: 16 is "ten and six", so 16 − 10 is just the six. The two top cards (21 − 10 = 11, 22 − 10 = 12) preview two-digit thinking: drop one ten, keep the rest. This deck should go quickly; its job is making the ten visible inside every teen number.
How to Cut and Fold
- Print the PDF single-sided on plain paper or light cardstock.
- Cut along the solid lines to separate the cards.
- Fold each card along the dashed center line so the answer sits behind the question, and turn the card over like a page to check.
- Optional: a dab of glue inside the fold makes a sturdy double-thick card.
Frequently Asked Questions
Why is subtracting 10 from a teen number so clean?
Teen numbers are literally ten-and-some: 14 is 10 + 4, so 14 − 10 = 4. No borrowing, no counting — the answer is sitting in the ones place already.
How does this deck support the −8 and −9 tricks?
Both tricks start with "take ten away" and then adjust. A child who owns these facts performs the first step of minus-ten-plus-one and minus-ten-plus-two instantly.
What comes after the −10 facts?
Two-digit subtraction, where "subtract the tens, subtract the ones" scales the same idea — and the regrouping guide takes over where the facts leave off.