Post on 01-Jan-2016
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