1. Copyright © 2012, 2009, 2005, 2002 Pearson Education, Inc. Chapter 3 Decimals

2. Copyright © 2012, 2009, 2005, 2002 Pearson Education, Inc. Dividing Decimals 3.5

3. Copyright © 2012, 2009, 2005, 2002 Pearson Education, Inc. Dividing by a Whole Number When dividing a decimal by a whole number, place the decimal point for the quotient directly above the decimal point in the dividend.. The decimal points are aligned, one above the other. 2.16 Divide as you normally divide whole numbers. 16 12 8 48 0

4. Copyright © 2012, 2009, 2005, 2002 Pearson Education, Inc. Dividing by a Whole Number Example: Divide 0.104 ÷ 4. 0.026 8 24 0 Note the zero after the decimal point.

5. Copyright © 2012, 2009, 2005, 2002 Pearson Education, Inc. Dividing by a Whole Number Example: Divide 263.82 ÷ 7 and round to the nearest hundredths. 37.688 Carry out the division to the thousandths place, and then round. 21 53 49 48 42 62 56 60 Note that the remainder is not zero. 0 An extra zero was added to carry out the division to the required place. 37.688 is rounded to 37.69 (the nearest hundredths).

6. Copyright © 2012, 2009, 2005, 2002 Pearson Education, Inc. Dividing by a Decimal 1.Make the divisor a whole number by moving the decimal point to the right. Mark that position with a caret (  ). Count the number of places the decimal point moved. 2.Move the decimal point in the dividend to the right the same number of places. Mark that position with a caret. 3.Place the decimal point of your answer directly above the caret marking the point of the dividend. 4.Divide as with whole numbers. When dividing a decimal by another decimal, the division problem is converted into an equivalent problem that has a whole number as a divisor.

7. Copyright © 2012, 2009, 2005, 2002 Pearson Education, Inc. Dividing by a Decimal Example: Divide 4.209 ÷ 1.83. 2.3 Move each decimal point to the right two places... Mark the new position by a caret (  ).  Place the decimal point of the answer directly above the caret.. 366 549 0 Divide as normal.