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This Subtraction Within 10 drill has 40 problems for Grade 1. Sheep theme. Answer key included.
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Max discovered 10 sheep scattered across the hillside—he must round them up before the storm arrives!
Standard: CCSS.MATH.1.OA.C.6
Preview
Page 1 — Drill
Page 2 — Answer Key
What's Included
About this Grade 1 Subtraction Within 10 Drill
Subtraction-within-10 is a cornerstone skill that helps six- and seven-year-olds begin to understand how numbers break apart and combine—a foundation for all future math. At this age, children are naturally curious about "how many are left," whether they're sharing snacks, giving away toys, or counting down to recess. When students master subtraction-within-10, they develop number sense and learn that math describes real situations in their lives. This skill also builds confidence: a child who can quickly figure out that 8 - 3 = 5 feels empowered and more willing to tackle harder problems later. Beyond the worksheet, fluency with these smaller numbers trains the brain to hold numbers in mind and manipulate them—thinking skills that support reading, writing, and problem-solving across all subjects. Practicing these facts regularly helps students move from counting on their fingers to thinking about numbers more abstractly.
What your student will practice
- Solve subtraction problems with minuends from 1 to 10 fluently
- Recognize the minus symbol and understand take-away meaning
- Count backwards and relate it to subtraction situations
- Check answers using addition (inverse relationship awareness)
Common mistakes to watch for
The most common error is students counting backwards incorrectly—starting the count from the number they're subtracting rather than the difference. For example, with 7 - 2, they'll count "7, 6" and say "6" instead of continuing to "5." Another frequent mistake is using fingers inconsistently or losing track when they do count, leading to off-by-one errors. Parents and teachers can spot this by asking the child to "show me with your fingers" or "count out loud as you solve it." If a child consistently answers one too high or one too low, that's a red flag that their counting strategy needs practice.
Try a simple "take away" game with real objects at home—blocks, crackers, or even small toy sheep if you have them. Say a subtraction sentence aloud ("I have 9 crackers and I eat 2, how many are left?"), let your child physically remove the items, and count what remains together. This hands-on approach helps six-year-olds connect the words and symbols to concrete action, making the concept stick far faster than worksheets alone. Repeat with the same numbers a few times, then switch to new ones once your child shows confidence.