Movement of the Decimal Point
Learn how to multiply and divide by 10, 100, and 1000 by moving the decimal point. Let’s get started! 🚀
Video Lesson
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Flashcards
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🛎️ Multiplying and Dividing by 10, 100, 1000
- Multiplying by 10, 100, 1000 moves the decimal right.
- Dividing by 10, 100, 1000 moves the decimal left.
🛎️ How to Shift the Decimal Point
- Multiplying by 1000 means moving the decimal point 3 places to the right.
- Dividing by 100 means moving the decimal point 2 places to the left.
🛎️ Using Decimal Movement to Convert Units
- When converting to smaller units, multiply by the conversion factor. For example,
- When converting to larger units, divide by the conversion factor. For example,
Practice Questions
Test your understanding
What is 7.3 multiplied by 10?
Correct! 🎉 +10 pointsNot quite right
Multiplying by 10 moves the decimal point one place to the right, so 7.3 becomes 73.
What is 0.5 multiplied by 1000?
Correct! 🎉 +10 pointsNot quite right
Multiplying by 1000 moves the decimal point three places to the right, so 0.5 becomes 500.
What is 8 divided by 100?
Correct! 🎉 +20 pointsNot quite right
Dividing by 100 moves the decimal point two places to the left, so 8 becomes 0.08.
Convert 8.9 metres into millimetres.
Correct! 🎉 +20 pointsNot quite right
Multiplying by 1000 moves the decimal point three places to the right, so 8.9 becomes 8900.
What is 78.4 divided by 1000?
Correct! 🎉 +20 pointsNot quite right
Dividing by 1000 moves the decimal point three places to the left, so 78.4 becomes 0.0784.
Convert and divide it by 10.
Correct! 🎉 +30 pointsNot quite right
First, convert to a decimal by dividing by 100, giving 0.125. Then divide by 10, moving the decimal one place to the left, resulting in 0.0125.
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Interactive Activity
Movement of the Decimal Point
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