Dividing Decimals

Important Terminology

• Divisor-the number you are dividing

• Dividend-the number you are dividing by

Dividing with Decimals:

There are 2 types of division problems involving decimal points:

No decimal in the divisor

Decimal in the divisor

Division with Decimals:NO decimal point in the divisor…

Step 1: Write the problem in the traditional long division formatStep 2: Move the decimal point in the dividend straight up into the quotientStep 3: Divide as usual

Remember to divide out one more place than you are rounding to…

Division with Decimals:NO decimal point in the divisor…

2. 1 2 7

2 4. 2 5 4

- 4

0 2

-2

0 5

-4

1 4

-1 4

0

Move the decimal point straight up and divide

Division with Decimals:Yes…Decimal point in the divisor…Step 1: Write the problem in the traditional long division formatStep 2: Move the decimal point in the divisor to the far right of the divisorStep 3: Move the decimal point the SAME

number of places in the dividendStep 4: Move the decimal point in the dividend straight up into the quotientStep 5: Divide as usual

Remember to divide out one more place than you are rounding to…

Division with Decimals:Yes… decimal point in the divisor…2 1. 2 7

0.2 4. 2. 5 4

- 4

0 2

-2

0 5

-4

1 4

-1 4

0

Move the decimal point outside, inside, then straight up and divide

Division Practice:Practice Problems: Find the quotient for each.

3.753 3 = 8.7 100 =

428.6 ÷ 2 = 2.436 0.12 =

97.31 ÷ 5 = 0.8542 0.2 =

1.251 0.087

214.3 20.3

19.462 4.271

Division Practice:Practice Problems: Find the quotient for each.

245.9 1000 = 0.65 5 =

4.563 ÷ 0.003 = 21.35 0.7 =

67.337 ÷ 0.02 = 1500.4 1000 =

0.2459 0.13

1,521 30.5

3366.85 1.5004

Click to see video

• http://glencoe.mcgraw-hill.com/sites/0078804760/student_view0/chapter3/lesson8/personal_tutor.html

• http://glencoe.mcgraw-hill.com/sites/0078804760/student_view0/chapter3/lesson9/personal_tutor.html

Click to test your skills

• http://glencoe.mcgraw-hill.com/sites/0078804760/student_view0/chapter3/lesson8/self-check_quizzes.html

• http://glencoe.mcgraw-hill.com/sites/0078804760/student_view0/chapter3/lesson9/self-check_quizzes.html

• http://www.aaastudy.com/dec.htm