Free printable math drill — download and print instantly
This Adding Multiples Of 10 drill has 40 problems for Grade 2. Sheep 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 8 sheep missing from the barn! He must collect them before dark using secret number clues.
Standard: CCSS.MATH.2.NBT.B.5
Adding multiples of 10 is a foundational skill that helps second graders see patterns in our number system and build mental math confidence. When children grasp that 20 + 30 = 50, they're recognizing that tens work just like ones—a crucial insight for understanding place value. This skill makes later addition and subtraction faster and more flexible, reducing their reliance on counting on fingers. At ages 7-8, students' brains are primed to spot these patterns, and mastering multiples of 10 creates a mental scaffold for all future multi-digit computation. Whether counting coins, measuring ingredients while helping with sheep shearing, or organizing classroom supplies, children use this skill constantly. Building automaticity with tens helps students approach word problems with strategy rather than stress, setting them up for success in third grade and beyond.
Many second graders add the tens digits correctly but then forget to include the zero in their answer, writing "5" instead of "50" for 20 + 30. Others confuse the process and treat multiples of 10 like single digits, thinking 20 + 30 = 23 or 32. You'll spot this when a child counts by ones instead of by tens, or when they write answers that don't end in zero. Watch for students who can say "2 tens plus 3 tens equals 5 tens" but can't translate that to "20 + 30 = 50"—they need the bridge between tens language and standard notation.
Create a simple game using coins or fake money: give your child a pile of dimes and ask them to make different amounts by combining groups. For example, "Show me 30 cents" (3 dimes), then "Now add 40 cents more—how much do you have?" This concrete experience with tens helps them see that 30 + 40 = 70 without forcing abstract thinking. Rotate the coins they're combining, and let them say aloud "3 tens plus 4 tens" before checking their total—this verbal rehearsal cements the pattern for automaticity.