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This Subtracting Multiples Of 10 drill has 40 problems for Grade 2. Young Athletes theme. Answer key included.
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Max must collect 80 soccer balls scattered across the field before the big game starts!
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 makes larger math problems manageable for second graders. When students can quickly subtract 10, 20, 30, or 40 from two-digit numbers, they're building mental math fluency that supports all future arithmetic. At ages 7–8, children's brains are developing the ability to recognize patterns, and multiples of 10 provide the clearest pattern in our number system. Mastering this skill also builds confidence: a young athlete tracking their team's score, or a student calculating how many items are left after giving some away, both rely on this quick subtraction. This worksheet strengthens place value understanding—students learn that subtracting tens doesn't change the ones place—a concept that transfers directly to addition, word problems, and multi-digit computation later on.
What your student will practice
- Subtract multiples of 10 from two-digit numbers without regrouping
- Recognize that subtracting tens only changes the tens digit
- Apply subtraction of multiples of 10 to solve word problems
- Explain the pattern when subtracting 10, 20, 30, or 40 from the same number
Common mistakes to watch for
The most common error is students treating multiples of 10 like any other subtraction, forgetting that only the tens place changes. For example, a student might write 45 – 20 = 25 as 45 – 20 = 35, incorrectly borrowing from the ones place when none is needed. Another frequent mistake is losing track of the tens digit itself—writing 67 – 30 = 34 instead of 37. To spot this, look for answers where the ones digit has unexpectedly changed, or where the student has subtracted from the wrong place value.
Create a real subtraction scenario at home using items your child cares about—perhaps sports cards, stickers, or toy figurines. Place 56 items in a pile and ask your child to remove 20, then 30, then 40 in separate rounds. After each removal, have them count what's left and write down the number sentence (56 – 20 = 36). This hands-on approach reinforces that only the tens group shrinks, while the smaller group of ones stays untouched, making the abstract concept concrete and memorable.