Ready to Print
This Subtracting Multiples Of 10 drill has 40 problems for Grade 2. Video Game Heroes theme. Answer key included.
⬇ Download Free Math DrillGet new free worksheets every week.
All worksheets checked by our AI verification system. No wrong answers — guaranteed.
Max discovered 90 stolen power crystals! He must subtract by tens to unlock each robot before the volcano erupts!
Standard: CCSS.MATH.2.NBT.B.5
Preview
Page 1 — Drill
Page 2 — Answer Key
What's Included
About this Grade 2 Subtracting Multiples Of 10 Drill
Subtracting multiples of 10 is a foundational skill that builds your child's number sense and prepares them for two-digit subtraction and mental math strategies. When second graders can quickly subtract 10, 20, or 30 from numbers like 45 or 67, they're developing the ability to recognize place value patterns—understanding that 45 - 10 is really just removing one group of ten, leaving the ones place untouched. This skill appears constantly in daily life: calculating change at a store, figuring out how many minutes are left in a video game level, or tracking scores. Mastering multiples of 10 also builds confidence and speed, reducing reliance on counting on fingers and allowing students to tackle more complex math problems. Children who struggle here often have difficulty with regrouping later, so this is a critical moment to cement the pattern.
What your student will practice
- Subtract multiples of 10 from two-digit numbers with automaticity
- Recognize that ones digits stay the same when subtracting tens
- Apply tens-and-ones thinking to solve real subtraction problems
- Build mental math fluency for faster computation
Common mistakes to watch for
The most common error is students treating multiples of 10 as individual ones, leading them to count backward by ones instead of by tens. For example, they might solve 34 - 20 by counting "33, 32, 31..." rather than recognizing the pattern "34 becomes 24 becomes 14." Another frequent mistake occurs when students forget that the ones digit never changes: they might write 34 - 20 = 13 instead of 14, showing they've lost track of the ones place. You'll spot this by checking whether their ones digits match the original number—they should always be identical.
Play a simple "score tracker" game with your child using a whiteboard or paper. Write down a starting score (like 45 points), then announce that they lost 10 points, 20 points, or 30 points in rounds—they quickly write or say the new score. This mirrors real video game score tracking and makes the pattern concrete because they see the ones digit stay put while the tens digit changes. Repeat this 5-10 times in short bursts during the week, and celebrate when they stop counting and start "just knowing."