Free printable math drill — download and print instantly
This Adding Multiples Of 10 drill has 40 problems for Grade 2. Donuts theme. Answer key included.
⬇ Download Free Math DrillGet new free worksheets every week.
All worksheets checked by our AI verification system. No wrong answers — guaranteed.
Max discovered the donut boxes tumbled everywhere! He must quickly count and stack them before the grand opening.
Standard: CCSS.MATH.2.NBT.B.5
Adding multiples of 10 is a cornerstone skill that helps second graders develop number sense and mental math fluency. At this age, children are learning that 10, 20, 30, and so on follow a predictable pattern—recognizing this makes larger numbers feel less intimidating. When students can quickly add 24 + 10 or 35 + 20, they're building the foundation for two-digit addition, which is a major Common Core focus in Grade 2. This skill also connects to real-world situations kids encounter daily: counting dimes at the store, tracking points in a game, or organizing items into groups of ten. By practicing adding multiples of 10, children strengthen their ability to see numbers as building blocks rather than isolated facts, laying groundwork for multiplication and place value understanding in later grades.
Many second graders add the digits incorrectly when working with multiples of 10—for example, solving 25 + 30 by adding 2 + 3 and 5 + 0 separately, arriving at 35 instead of 55. Another common error is treating multiples of 10 like single-digit numbers, so they might count up by ones instead of recognizing the pattern. Watch for students who recount their fingers each time or write answers that ignore place value, like writing 2510 for 25 + 10. If a child struggles, ask them to identify which digit (tens or ones) changes, and have them say the answer aloud before writing it.
Play a quick game at home using coins or small objects: give your child a pile of pennies representing ones and dimes representing tens. Show them a two-digit number (like 34), then add a dime at a time while asking what the new number is. This concrete visual helps them see that only the tens place changes, making the pattern stick. Just five minutes of this activity—perhaps while waiting for snack time or baking donuts—builds automaticity that carries into worksheet success.