Multiplying decimals is whole-number multiplying, then placing the point. That runs on quick multiplication facts, multiplying by 10 and 100, and reading decimal place value. Warm these up and decimal products stay in the right spot.
These are words you'll need to already know to follow this lesson — not the new words the lesson teaches. Review each one, its meaning, and the example so the new lesson makes sense from the start.
Level 1 To add the same number many times to find a total.
Example: 7 × 8 means add 7 eight times to get 56.
Level 1 To make a number ten times bigger by adding a zero.
Example: 6 × 10 = 60.
Level 1 What a digit is worth because of where it sits in a number.
Example: In 0.4, the 4 is in the tenths place, so it is worth 4 tenths.
Level 1 A single number symbol from 0 to 9.
Example: 0.4 has one digit after the dot.
These check the skills you'll need for this lesson — not the new lesson itself. Answer all 3, then press Show my path. No grade — it just suggests where to start.
1. What is 7 × 8?
2. What is 6 × 10?
3. How many digits are right of the decimal point in 0.4?
Vocabulary previewed and basics checked. Time to start the lesson.
Start Lesson 1-6 →