This document discusses how to divide decimals using a fair share model. It provides examples of dividing decimals like 2.4 divided by 0.6. The key steps are to estimate the quotient, then use fair sharing with place value charts to calculate. Dividing decimals is like dividing whole numbers, but you must consider the decimal point. Practicing more examples can help identify patterns in the quotients.
6. Let’s Common Mistake
A Review
Forgetting to take the decimal into
consideration when dividing.
12 ÷ 0.6 ≠ 2
7. Core Lesson
Let’s Review Smart Estimate
2.4 ÷ 0.6 0.6 is close to 0.5
2.4 is close to 2.5
2.4 ÷ 0.6 ≈
2.5 ÷ 0.5 = 5
Smart estimate:
around 5
8. Core Lesson
Let’s Review
2.4 ÷ 0.6 = 4
This is a
reasonable
answer since it is
close to my
smart estimate
9. Core Lesson
Let’s Review
Justin has 3.2 pounds of candy to share. He is putting them in bags
which each hold 0.5 lb. How many bags will he fill? Will there be any
left over?
3.2 ÷ 0.5 ≈
3.2 is close to 3
3 ÷ 0.5 = 6
Smart estimate:
Around 6
10. Core Lesson
Let’s Review
3.2 ÷ 0.5 = 6 with 2 left
This is a
reasonable
answer since it is
close to my
smart estimate
11. In this lesson you have learned
how to divide decimals by using
fair sharing.
13. Let’s Review Activities
Extension
Draw a chart showing the quotients for these
problems. Then explain the patterns you see in
the quotients.
1.2 ÷ 6; 1.2 ÷ 0.6; 1.2 ÷ 0.06
14. Let’s Review Activities
Extension
Explain how these two problems are
related.
24 divided by 6
2.4 divided by 0.06
15. Which drawing shows a fair share
Quick Quiz
Let’s Review method of dividing 2.8 by .7?
A
C
B
