Multiplying by 10, 100, and 1,000
Grade 4 · Math · Multi-Digit Multiplication · Quebec, Canada
Lesson Summary
Learn the shortcut for multiplying any number by 10, 100, or 1,000. You just add zeros to the end of the number.
Explanation
When you multiply a number by 10, you add one zero to the end. When you multiply by 100, you add two zeros, and when you multiply by 1,000 you add three zeros. For example, 45 × 10 = 450, and 45 × 100 = 4,500. This works because each zero means you are moving every digit one place to the left on the place-value chart. Knowing this trick makes it much faster to solve big multiplication problems in your head.
Practice Questions
Q1: What is 37 × 10?
Answer: 370
Q2: What is 56 × 100?
Answer: 5,600
Q3: What is 8 × 1,000?
Answer: 8,000
People Also Ask
What is Multiplying by 10, 100, and 1,000 in Grade 4 Math?+
Multiplying by 10, 100, and 1,000 is a lesson in the Multi-Digit Multiplication chapter of Grade 4 Math. It is part of the Quebec, Canada school curriculum and covers key concepts that students need to understand at this level.
What grade level covers Multiplying by 10, 100, and 1,000?+
Multiplying by 10, 100, and 1,000 is taught in Grade 4 as part of the Math curriculum in Quebec, Canada.
How can I help my child with Multi-Digit Multiplication in Math?+
Start with the lesson summary and explanation on this page. Practice the questions provided, then use TutorTom for personalized, step-by-step help with Multi-Digit Multiplication topics.