# Multiplying and Dividing Decimals

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Curipod lesson about topic "Multiplying and Dividing by Decimals"

1. Word cloud
60 seconds
How are you feeling today?
2. Slide
60 seconds
Decimals are written in tenths, hundredths, and thousandths. To multiply decimals, line up the decimal points and multiply as if there were no decimals. To divide decimals, move the decimal point of the divisor to the right until it becomes a whole number.
Multiplying and Dividing by Decimals
3. Slide
60 seconds
Decimals: A number with one or more digits to the right of a decimal point. Multiplying Decimals: Multiplying two numbers with one or more digits to the right of a decimal point. Dividing Decimals: Dividing one number with one or more digits to the right of a decimal point by another number.
Concepts:
4. Word cloud
120 seconds
What strategy can we use to multiply 7.2 by 10?
5. Slide
120 seconds
Let's see how we can multiply 7.2 by 10 using two different strategies.
6. Poll
20 seconds
8.4 by 10
• 84.0
• 840.0
• 8400.0
7. Poll
20 seconds
2.1 by 100
• 2.1
• 21.0
• 210.0
8. Poll
20 seconds
5.7 by 1000
• 57.0
• 570.0
• 5700.0
9. Slide
120 seconds
You have 2 minutes to explain your strategy with a partner.
10. Poll
60 seconds
What strategy would you use to solve 521 times 1000?
• Standard Algorithm
• Use place value chart
11. Word cloud
120 seconds
What strategy can we use to divide 1.6 by 10?
12. Slide
120 seconds
Let's see how we can divide 1.6 by 10 using two different strategies.
13. Poll
20 seconds
9.2 divided by 10.
• 0.92
• 0.092
• 0.0092
14. Poll
20 seconds
3.8 divided by 100
• 0.38
• 0.038
• 0.0038
15. Poll
20 seconds
8.1 divided by 1000
• 0.81
• 0.081
• 0.0081
16. Poll
60 seconds
What strategy would you use to solve 283 divided by 1000?
• Standard Algorithm
• Write as a fraction
• Use place value chart
17. Slide
120 seconds
You have 2 minutes to explain your strategy with a partner.
18. Open question
180 seconds
How did you feel when trying to solve a problem that involved multiplying or dividing by decimals?
19. Open question
330 seconds
How did you know when you had the right answer when multiplying or dividing by decimals?
20. Drawings
420 seconds
Brain Break: Draw a donut with sprinkles dancing.
21. Slide
120 seconds
You have 6 minutes to complete the exit ticket on your own.