1. Monday August 1, 2011
Hubbs Center - Math 2
Agenda and Objectives

2. Today’s objectives...
• We will review:
– converting fractions to decimals
– finding equivalent decimals
• We will practice and discuss
comparing decimals.

3. Review:
Converting Fractions to Decimals
• Sometimes you can change the denominator
of a fraction to be10, 100, or 1,000 to make it
easier to convert to a decimal.
• Example: 1/5
– What could we multiply x 5 to get 10? 2.
– Multiply the numerator and denominator by 2. So,
1 x 2 = 2, 5 x 2 = 10.
– The new fraction says 2/10.
– 2/10 Two tenths 0.2

4. Review:
Converting Fractions to Decimals
• Now try the same method with these
fractions:
*Remember, try to get the denominator to
be 10, 100, or 1,000.
– 1/50
– 3/20

5. Review:
Converting Fractions to Decimals

6. Review: Finding Equivalent
Decimals
• Homework: page 87
• Let’s go around the room and share our
answers for #1-11.
• If you don’t want to share, you can say
“pass”.

7. Review: Finding Equivalent
Decimals
Word problem: Exploring Equivalent Decimals

8. Review: Finding Equivalent
Decimals

9. Comparing Decimal Numbers
Put the following numbers in order from
Greatest ------ Least.
1. 543, 341, 978
2. 751, 572, 321
3. 235, 313, 413
4. 451, 223, 571, 121
http://www.curriki.org/xwiki/bin/view/Coll_NaomiRodriguez/ComparingDecimalNumbers

10. Comparing Decimal Numbers
• What is a number between 0 and 2?
• What is a number between 1 and 2?
• What is a number between 1.5 and 2?
• Let’s make a number line to show where
those numbers are.

11. Comparing Decimal Numbers
• What is a number between 0 and 0.1?
• What is a number between 0.1 and 0.2?
• What is a number between 0.15 and 0.2?
• Let’s make a number line to show where those
numbers are.

12. Comparing Decimal Numbers
• Use your decimal place value sheet to help you compare:
0.2_________0.02
1.0_________0.1
0.5_________0.2
• Rules for Comparing Decimals:
Line the numbers up, one below the other. Line up the
decimal points to be sure all of the place values are
lined up.
Start at the left and work to the right. Compare one
column at a time.

13. Comparing Decimal Numbers
• Rules for Comparing Decimals:
Line the numbers up, one below the other. Line up the decimal
points to be sure all of the place values are lined up.
Start at the left and work to the right. Compare one column at a
time.
• Examples: 0. 5
Compare 0.5 and 0.289
0. 2 8 9
5 tenths is greater than 2 tenths.
0.5 > 0.289
Compare 0.882 and 0.89 0. 8 8 2
8 hundredths is less than 9 hundredths.
0. 8 9
0.882 < 0.89

15. Homework:
Comparing Decimal Numbers
• Page 88
• Page 70