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This 2 Digit By 1 Digit drill has 40 problems for Grade 2. Ocean theme. Answer key included.
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Max spotted 12 trapped dolphins! He must solve each math problem to free them before the tide rises.
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Page 1 — Drill
Page 2 — Answer Key
What's Included
About this Grade 2 2 Digit By 1 Digit Drill
Two-digit-by-one-digit multiplication is a crucial bridge in Grade 2 math. At ages 7-8, students are moving beyond simple skip-counting into genuine multi-step thinking. When your child multiplies 23 × 4 or 15 × 6, they're not just recalling facts—they're breaking apart tens and ones, multiplying each part separately, and combining the results. This skill builds the foundation for all larger multiplication and prepares them for division later. More practically, it helps them solve everyday problems: if a school aquarium has 3 tanks with 24 fish each, how many fish total? Mastering 2-digit-by-1-digit strengthens place value understanding, develops flexible thinking with numbers, and boosts confidence as math becomes more abstract.
What your student will practice
- Decompose 2-digit numbers into tens and ones before multiplying
- Multiply tens and ones separately, then add partial products correctly
- Apply 2-digit-by-1-digit multiplication to solve word problems with accuracy
- Build speed and automaticity with facts up to 99 × 9
Common mistakes to watch for
The most common error is forgetting to multiply the tens place. A child will solve 34 × 2 by multiplying only 4 × 2 = 8, writing 8 as the answer instead of 68. Another frequent mistake is writing the partial products in the wrong columns—multiplying correctly but then adding 60 + 8 as 14 instead of placing them in the right positions. You'll spot this when the child's mental math is actually sound, but their recorded answer jumps randomly. Watch for inconsistency: they may get 23 × 3 right one day but make the tens-place mistake the next.
Use grocery shopping to practice real multiplication. Ask your child: 'If apples cost $3 each and we need 12, how much will that be?' Let them work through it: 10 apples cost $30, plus 2 more apples cost $6, so $36 total. This isn't just practice—it shows them why 2-digit-by-1-digit matters immediately. Repeat this weekly with different items and prices, and watch them move from counting on fingers to using the decompose-and-add strategy in their head.