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Moving the decimal point during decimal multiplication
Moving the decimal point Step 1: Count how many numbers to the right of the decimal for the top number. Move the blue oval to see if you are correct. .1 2 3 x   2.4 3 decimal places 3 decimal places
Moving the decimal point Step 2: Count how many numbers to the right of the decimal on the bottom number. Move the blue oval to see if you are correct. .1 2 3 x   2.4 3 decimal places 1 decimal place
Moving the decimal point Step 3: Add the total decimal places together. Move the oval to see if you have the correct answer. .1 2 3 x   2.4 3 decimal places + 1 decimal place 4 decimal places
Moving the decimal point Step 4: Multiply. Move the oval to see if you are correct. .1 2 3 x   2.4 3 decimal places + 1 decimal place 2 9 5 2 4 decimal places
Moving the decimal point Step 5: Move the decimal to the left the number you found earlier. Move the oval to see if you are correct. .1 2 3 x   2.4 3 decimal places + 1 decimal place .2 9 5 2 4 decimal places
Now, let's practice! 1.   .6 8    x  . 2  . 1 3 6 2.  6 . 8    x  . 2  1 . 3 6 3.    6 8    x  . 2  1 3 . 6 4.   .6 8    x    2  1 . 3 6
Let's Assess
Let's do independent practice! PRACTICE
Attachments Decimal practice(2).doc

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Decimal multiplication

  • 1. Moving the decimal point during decimal multiplication
  • 2. Moving the decimal point Step 1: Count how many numbers to the right of the decimal for the top number. Move the blue oval to see if you are correct. .1 2 3 x 2.4 3 decimal places 3 decimal places
  • 3. Moving the decimal point Step 2: Count how many numbers to the right of the decimal on the bottom number. Move the blue oval to see if you are correct. .1 2 3 x 2.4 3 decimal places 1 decimal place
  • 4. Moving the decimal point Step 3: Add the total decimal places together. Move the oval to see if you have the correct answer. .1 2 3 x 2.4 3 decimal places + 1 decimal place 4 decimal places
  • 5. Moving the decimal point Step 4: Multiply. Move the oval to see if you are correct. .1 2 3 x 2.4 3 decimal places + 1 decimal place 2 9 5 2 4 decimal places
  • 6. Moving the decimal point Step 5: Move the decimal to the left the number you found earlier. Move the oval to see if you are correct. .1 2 3 x 2.4 3 decimal places + 1 decimal place .2 9 5 2 4 decimal places
  • 7. Now, let's practice! 1. .6 8 x . 2 . 1 3 6 2. 6 . 8 x . 2 1 . 3 6 3. 6 8 x . 2 1 3 . 6 4. .6 8 x 2 1 . 3 6
  • 9.
  • 10. Let's do independent practice! PRACTICE