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This Subtraction drill has 40 problems for Grade 1. Treehouse theme. Answer key included.
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Max's friends are stuck on different treehouse branches! Solve subtraction problems to bring them safely down.
Standard: CCSS.MATH.1.OA.C.6
Preview
Page 1 — Drill
Page 2 — Answer Key
What's Included
About this Grade 1 Subtraction Drill
Subtraction is one of the first formal math skills your child learns to represent "taking away" — something they do naturally every day. When a child has 5 crackers and eats 2, they're already thinking about subtraction without formal math language. At ages 6-7, children's brains are developing the ability to hold numbers in mind and understand that amounts can decrease, which builds foundational reasoning skills. Learning subtraction helps children develop number sense, recognize patterns between addition and subtraction, and solve real-world problems independently. This skill also strengthens working memory and logical thinking — abilities that support reading comprehension, planning, and problem-solving across all subjects. By practicing subtraction regularly, your child gains confidence with numbers and creates mental math strategies they'll use for years to come.
What your student will practice
- Subtract within 10 using objects, drawings, or fingers as concrete models
- Solve subtraction word problems using numbers 0 through 10
- Represent subtraction using the minus symbol and equals sign correctly
- Develop fluency with subtraction facts (automaticity and accuracy)
Common mistakes to watch for
Many Grade 1 students confuse which number to start with — they'll begin counting from the number being subtracted rather than the original amount. For example, with 7 - 3, a child might count "3, 4, 5" instead of starting at 7 and counting backward 3 times. You'll also notice children forgetting to count the starting number or losing track mid-count, especially with larger amounts. If a child is making careless errors, ask them to use fingers or objects to physically model the problem — this almost always reveals whether they understand the concept or simply need to slow down.
Try a simple snack-based game at home: give your child a small pile of crackers, cereal, or fruit pieces (start with 8-10 items). Say a subtraction problem aloud — "You have 6 grapes. Eat 2. How many are left?" — and let them physically remove the items while saying the number they end on. This mimics what they do with a treehouse toy collection or toy cars, and the concrete action cements the "taking away" concept far better than worksheets alone. Repeat with different amounts, celebrating when they get it right, and you'll notice this real-world practice transfers directly to their written work.