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Multiplying decimal fractions to whole numbers

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michelle.briggs

Updated 2 months ago

1. Slide
60 seconds
Objective: Multiply decimal fractions with tenths by multi-digit whole numbers using place value understanding to record partial products.
2. Word cloud
60 seconds
How could I change 2.34 to 234?
3. Open question
210 seconds
What is 2.54 in hundredths?
4. Poll
60 seconds
What is the 4.5 in tenths?
  • 450 tenths
  • 4 tenths
  • 45 tenth
  • .045 tenths
5. Poll
60 seconds
What is 3.45 in hundredths?
  • 345 hundredths
  • 300 hundredths
  • 45 hundredths
  • .345 hundredths
6. Open question
210 seconds
If I am multiplying 544 X 2.34 what could I do to take away the decimal from the problem?
7. Drawings
450 seconds
Draw an alien with multiple eyes, tentacles, and a giant rolling pin
8. Slide
60 seconds
To multiply decimals we will use the _______ method as ________ numbers but we will change the ________ _________ to its smallest place value unit, multiply Finally change it back to _____________ _____________
Spark curiousity
9. Poll
60 seconds
Rewrite 43 × 2.4 with 2.4 changed to tenths :
  • 43 ones x 24 tenths
  • 43 ones x 240 tenths
  • 43 ones x .24 tenths
  • 43 tenths x 24 tenths
10. Slide
60 seconds
Multiply 43 X 2.4
11. Slide
60 seconds
Now with the standard Algorithm
Multiply 43 X 2.4
12. Poll
60 seconds
Rewrite 495 × .98 with .98 changed to hundredths :
  • 495 ones x 98 hundredth
  • 495 ones x 9.8 hundredths
  • 495 ones x 98 hundredths
  • 495 tenths x 98 hundredths
13. Slide
60 seconds
Multiply 495 X .98
14. Slide
60 seconds
Now with the Standard Algorithm
Multiply 495 X .98
15. Drawings
450 seconds
Draw a dinosaur juggling cupcakes while balanced on a beam
16. Poll
60 seconds
Round 15.6 X 73 then state the estimated product:
  • 20 X 70= 1400
  • 10 X 60= 600
  • 20 X 60= 1200
  • 10 X 70= 700
17. Poll
60 seconds
Rewrite 15.6 × 73 with 15.6 changed to tenths
  • 1.56 tenths x 73 ones
  • 156 ones x 7.3 hundredths
  • 156 tenths x 73 ones
  • 1560 tenths x 73 ones
18. Slide
60 seconds
Multiply 15.6 X 73
19. Slide
60 seconds
Now with the Standard Algorithm
Multiply 15.6 X 73, with 15.6.
20. Drawings
450 seconds
Draw a chicken doing karate kicks while wearing a bandana and sunglasses.

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