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How to Model Multiplication of Decimals<br />
To model a whole number times <br />a decimal:<br />Example     3 x 0.2 =<br />
This is 3 groups of 0.2 so shade<br />in 3 groups of 2 tenths.<br />Example     3 x 0.2 =<br />
Example     3 x 0.2 =0.6<br />
To model a whole number times a decimal when the answer is greater than 1  Example 0.4 X 5<br />
.4 X 5<br />The Answer is 2<br />
To Model decimal x decimal:<br />Example     0.3 x 0.5 =<br />
First, shade in the first number vertically.<br />Example     0.3 x 0.5 =<br />
Second, shade in the 2nd number horizontally.<br />Example     0.3 x 0.5 =<br />
The area that has been shaded twice<br />is the answer.<br />Example     0.3 x 0.5 = .15<br />
You try it!     0.5 x 0.4<br />
You try it!     0.5 x 0.4<br />
0.5 x 0.4 = 0.20<br />
You try it!     0.3 x 0.4<br />
0.3 x 0.4 = 0.12<br />
You try it!     0.8 x 0.9<br />
0.8 x 0.9 = 0.72<br />
You try it!     0.6 x 0.7<br />
0.6 x 0.7 = 0.42<br />
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Model multiplication of decimals

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Model multiplication of decimals

  1. 1. How to Model Multiplication of Decimals<br />
  2. 2. To model a whole number times <br />a decimal:<br />Example 3 x 0.2 =<br />
  3. 3. This is 3 groups of 0.2 so shade<br />in 3 groups of 2 tenths.<br />Example 3 x 0.2 =<br />
  4. 4. Example 3 x 0.2 =0.6<br />
  5. 5. To model a whole number times a decimal when the answer is greater than 1 Example 0.4 X 5<br />
  6. 6. .4 X 5<br />The Answer is 2<br />
  7. 7. To Model decimal x decimal:<br />Example 0.3 x 0.5 =<br />
  8. 8. First, shade in the first number vertically.<br />Example 0.3 x 0.5 =<br />
  9. 9. Second, shade in the 2nd number horizontally.<br />Example 0.3 x 0.5 =<br />
  10. 10. The area that has been shaded twice<br />is the answer.<br />Example 0.3 x 0.5 = .15<br />
  11. 11. You try it! 0.5 x 0.4<br />
  12. 12. You try it! 0.5 x 0.4<br />
  13. 13. 0.5 x 0.4 = 0.20<br />
  14. 14. You try it! 0.3 x 0.4<br />
  15. 15. 0.3 x 0.4 = 0.12<br />
  16. 16. You try it! 0.8 x 0.9<br />
  17. 17. 0.8 x 0.9 = 0.72<br />
  18. 18. You try it! 0.6 x 0.7<br />
  19. 19. 0.6 x 0.7 = 0.42<br />

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