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By: Kellea McGehee

Comparing and Ordering Decimals. 5 th Grade Math. By: Kellea McGehee. The purpose of today’s lesson is to:. Compare decimals Ex: 2.4 > 2.04. Order decimals 1.02, 1.25, 1.50 (least to greatest) 1.50, 1.25, 1.02 (greatest to least). Reviewing Place Values.

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By: Kellea McGehee

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  1. Comparing and Ordering Decimals 5th Grade Math By: Kellea McGehee

  2. The purpose of today’s lesson is to: • Compare decimals Ex: 2.4 > 2.04 • Order decimals 1.02, 1.25, 1.50 (least to greatest) 1.50, 1.25, 1.02 (greatest to least)

  3. Reviewing Place Values To the hundredths place! Place Value Chart How do we say this in words?

  4. Reading Decimals In words, 7.29 is seven and twenty-nine hundredths Decimals to the hundredths place value!

  5. Reviewing Place Values To the Thousandths Place! Place Value Chart How do we say this in words? Lets take a look…

  6. Reading Decimals Decimals to the thousandths place: In words, 63.174 is sixty-three and one hundred seventy-four thousandths.

  7. Reading Decimals • 2.4 = Two and four tenths • 2.04 = Two and four hundredths • 2.004 = Two and four thousandths

  8. Comparing Decimals How does this work?

  9. Comparing Decimals • Step 1: Line up the decimal points • Step 2: Find the first place where the digits differ • Step3: Compare the differing digits • Step 4: Use <, >, or = to state your answer

  10. Comparing Decimals How do we compare decimals:

  11. Comparing Decimals: Practice Practice: 4.08 4.060 Answer: 4.08 > 4.060 Practice: 50.030 50.031 Use >, <, or = to compare each pair of decimals. Answer: 50.030 < 50.031

  12. Ordering Decimals • How do we go from least to greatest? • How do we go from greatest to least? New Visions Technology Inc.

  13. Ordering Decimals How do we order decimals:

  14. Ordering Decimals From Least to Greatest

  15. Ordering Decimals From Greatest to Least

  16. Ordering Decimals: Practice • Order from Least to Greatest: • 3.01, 3.009, 3.09, 3.0001 • Order from Greatest to Least: • 45.303, 45.003, 45.03, 45.033 • Answer- 3.0001, 3.009, 3.01, 3.09 Answer- 45.303, 45.033, 45.03, 45.003

  17. Review: Comparing Decimals • Step 1: Line up the decimal points • Step 2: Find the first place where the digits differ • Step3: Compare the differing digits • Step 4: Use <, >, or = to state your answer

  18. Review: Ordering Decimals New Visions Technology Inc.

  19. How often do you feel you use good number sense?

  20. Practice Links • Comparing Decimals Homeschoolmath.Net • Ordering Decimals-MATHSCORE.COM

  21. Image References • Cool Math: Place Values for Decimals • MathTeacher.com • HelpingwithMath.com • Google Images

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