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This Subtracting Multiples Of 10 drill has 40 problems for Grade 1. Christmas theme. Answer key included.
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Max's sleigh lost 80 presents in the snowstorm! He must subtract groups of 10 to find them all before Christmas morning!
Standard: CCSS.MATH.1.NBT.C.6
Subtracting multiples of 10 is a foundational skill that helps first graders see patterns in our number system and build confidence with larger numbers. When children can quickly figure out that 45 − 10 = 35 or 60 − 20 = 40, they're developing mental math flexibility that makes all future math easier. This skill leverages what they already know about counting by tens, turning it into a subtraction strategy rather than starting from scratch each time. At ages 6 and 7, practicing with multiples of 10 also strengthens their understanding of place value—ones stay the same, only the tens change. This is exactly the kind of pattern-spotting that helps young mathematicians feel capable and less dependent on counting on their fingers. Even real-world moments, like a toy store removing 10 items from a shelf of 50, become opportunities to notice and celebrate this mathematical thinking.
Many first graders subtract the tens digit incorrectly by treating it like a ones problem—for example, answering 34 − 10 = 24 by subtracting 1 from the 3 instead of 10 from the 30. Others confuse the direction and add instead, especially if they're still building fluency with the minus symbol. Watch for students who count backward one by one (34, 33, 32...) rather than jumping by tens, which shows they haven't yet internalized the pattern. These errors reveal that the child needs more concrete or visual practice with place value before moving to abstract subtraction.
Create a simple "store shelf" using a row of ten items (blocks, crackers, even wrapped Christmas ornaments). Start with 50 of something, remove 10, and ask your child to count what's left. Repeat with different starting amounts (60, 40, 70) and always remove 10. After three or four rounds, ask: "What's the trick?" This hands-on pattern-spotting is far more powerful for a six-year-old than worksheets alone because they see the tens digit change while the ones stay put.