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Published byIris Wade Modified over 6 years ago
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Today’s Lesson . . . What: Fraction, Decimal, & Percent Review and Converting between Decimals Percentages. Why: . . . so I can refresh my understanding of fractions, decimals, and percentages; and also convert between decimals and percentages. How: . . . by actively engaging in lesson, participating in notes/classwork, and completing homework. We will answer some key essential questions . . . (next slides)
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How are fractions, decimals, and %’s similar? How are they different?
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How do I convert between decimals and percentages?
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Get your highlighters ready!!
Prior Knowledge/ Vocabulary: Get your highlighters ready!! A proper FRACTION represents a part out of a larger whole ( 𝟕 𝟏𝟎 means 7 out of 10 ). A PERCENT represents a part out of one-hundred (35% means 35 out of one-hundred). A DECIMAL number also represents the relationship between a whole number and its parts (3.25 means 3 wholes and 25-hundredths of a whole).
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Visual Example #1:
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Your Turn (fill-in the missing parts):
𝟐 𝟑
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Visual Example #2 (Number Line):
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Your Turn (fill-in missing parts):
Fraction: Percent: Decimal: 70% 𝟕 𝟐𝟎 0.95
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Essential Question: Considering the above, how are fractions, decimals, and percentages similar? How are they different? Answers will vary. Students should understand that fractions, decimals, and %’s ALL represent a part-to-whole relationship.
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Who can say above # in “Decimal Language”?
“Decimal Language” and Place Value: Can you fill-in-the-blanks with the correct place-value names? 1, tens ones tenths thousands hundreds hundredths thousandths ten-thousandths Who can say above # in “Decimal Language”?
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1. Four- hundredths _________________________________
Three and two-tenths_____________________________ _______________________________________________ ________________________________________________ Examples (Naming Decimals): 0.04 3.2 “Zero and one-thousandth” (or “one-thousandth” ) “Forty-five and one-tenth”
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Your Turn (Naming Decimals):
“Eight-hundredths” 0.08______________________________________________ 3.2______________________________________________ “Three and two-tenths” 3. Fifty and three-thousandths______________________ 4. Nine ten-thousandths_____________________________ 50.003 0.0009
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Converting Decimals and Percentages:
Decimal to Percent: Move decimal point 2 spaces to the right! Percent to Decimal: Move decimal point 2 spaces to the left! Decimal to % (D to P) Example: 0.125 = 12.5% % to Decimal (P to D) Example: 5% = 0.05
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Practice: DECIMAL PERCENT 1. 35% 2. 0.6 3. 4% 4. 4.8 5. 6.2% 6. .035
Together (Guided): DECIMAL PERCENT 1. 35% 3. 4% 5. 6.2%
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0.08 0.9% 4.29 525% 0.565 20% Practice: Your Turn: DECIMAL PERCENT 1.
8% 3. 429% 5. 56.5% 0.08 0.9% 4.29 525% 0.565 20%
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Essential Question: How do I convert between decimals and percentages? Students should understand that they will always move decimal point 2 places, and that they can use the “alphabet” strategy to remember which way to move decimal. Wrap-it-Up: Today we learned/ reviewed . . . Students write in own words. Answers will vary.
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END OF LESSON
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