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This Adding Multiples Of 10 drill has 40 problems for Grade 1. Soccer theme. Answer key included.
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Max must collect all the soccer balls scattered across the field before the big tournament starts!
Standard: CCSS.MATH.1.NBT.C.4
Preview
Page 1 — Drill
Page 2 — Answer Key
What's Included
About this Grade 1 Adding Multiples Of 10 Drill
Adding multiples of 10 is a cornerstone skill that helps first graders recognize patterns in our number system and builds confidence with larger numbers. When children understand that 20 + 30 = 50, they're learning how tens work as building blocks—much like how a soccer team needs multiple players working together. This skill bridges single-digit addition (which most first graders know) and prepares them for two-digit addition later. At age 6-7, children's brains are developing the ability to think about groups and patterns rather than just counting individual objects. Mastering multiples of 10 reduces cognitive load because students realize they don't need to count by ones anymore. This fluency with tens also connects to real-world situations like counting money, keeping score, or organizing objects into groups, making math feel practical and less intimidating.
What your student will practice
- Recognize and count by tens from 10 to 100
- Add two multiples of 10 accurately without counting by ones
- Understand that tens can be added like single digits
- Apply adding-multiples-of-10 to solve simple word problems
Common mistakes to watch for
The most common error is when students revert to counting by ones instead of recognizing the pattern—they'll count 10, 20, 30... 40, 41, 42, 43... instead of seeing that 30 + 40 = 70 instantly. Another frequent mistake is confusing the ones place; students might write 30 + 20 = 50 correctly but then add extra ones and write 55. You'll spot this when a child solves one problem right but the next one has an extra digit, or when they physically count on their fingers for every single problem even after practice. These errors signal the child hasn't internalized that the ones place stays zero when adding multiples of 10.
Play a quick 'score keeper' game at home: announce two scores in a simple, imaginary game using multiples of 10 (like 'Team A scored 20 points, Team B scored 30 points—how many points altogether?'), and have your child say the total aloud without writing anything down. Do this with casual language while preparing dinner or during a car ride, using real multiples of 10 between 10 and 100. This keeps the skill alive without feeling like a worksheet, and the instant verbal response helps children develop automaticity—the ability to answer without thinking through every step.