Max Rescues the Robot Factory: Multiplication by 10 and 100

About this Grade 2 Multiplying By 10 100 Drill

Multiplying by 10 and 100 is a foundational pattern that helps second graders see how our number system works. When students master this concept, they're building mental math flexibility and preparing for all future multiplication and division work. At ages 7-8, children's brains are developing the ability to recognize patterns and shortcuts—multiplying by 10 is one of the most elegant patterns in math. This skill transforms how quickly students can solve problems and builds their confidence with larger numbers. Beyond the classroom, understanding how numbers grow by tens helps children count money, measure lengths, and solve real problems they encounter daily. Once students see that 3 × 10 always means "3 tens," they've unlocked a powerful tool that makes math feel less like memorization and more like discovery.

What your student will practice

• Recognize the pattern when multiplying any number by 10
• Apply the pattern to multiply two-digit numbers by 10
• Understand why multiplying by 100 extends the pattern with zeros
• Write multiplication equations using 10 and 100 as factors

Common mistakes to watch for

Many second graders add a zero randomly without understanding why, writing 5 × 10 = 510 instead of 50. Others confuse the pattern and try to add 10 to the number (5 + 10 = 15) instead of multiplying. You'll spot this error when a child writes answers that are far too small—like 14 for 4 × 10. The root cause is that students haven't yet visualized groups or tens; they're copying a rule they don't own. Ask them to draw 3 groups of 10 objects to rebuild the mental image before correcting the written work.