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  • 1. Warm Up
    • Write in simplest form
    • Solve.
  • 2. Warm Up
    • Write in simplest form
    • Solve.
    1
  • 3. Proportions Some of the most useful items on the math menu Chapter 4.1
  • 4. Write 5 to 9
    • as a fraction
    • as a ratio
    • What’s the difference?
  • 5. Are They Equal?
    • Cross Multiplication
    • What is 10 x 5?
    • What is 2 x 25?
    • If both cross multiplications statements are equal, the fractions are equal.
  • 6. Are They Equal?
    • Cross Multiplication
    • What is 16 x 3?
    • What is 4 x 12?
    • If both cross multiplications statements are equal, the fractions are equal.
    48 48
  • 7. Are They Equal?
    • Cross Multiplication
    • What is 3 x 60?
    • What is 4 x 48?
  • 8. Find the missing number.
    • Using Algebra
    • 14 x 35 = 10x
  • 9. Rectangle ABCD ~ WXYZ
    • Solve for s.
    B W D C A X Y Z 9 27 s 25 25 s
  • 10. Book Sale
    • 4 for $1.25
    • How much is one?
    • Label books
      • and price
    • Set up a proportion.
    • Write down labels to help.
  • 11. Cross Multiply and divide
    • 4 for $1.25
    • How much for one?
  • 12. How Tall?
    • Man – 6 ft
    • Man’s shadow – 9 ft
    • Tree’s shadow – 45 ft
    • Set up a proportion.
  • 13. Proportion
    • Man – 6 ft
    • Man’s shadow – 9 ft
    • Tree’s shadow – 45 ft
    • Labels
    • Actual Height
    • shadow length
  • 14. “Lush-Lawn Fertilizer”
    • Use 4 lb. for 1500 sq. ft.
    • How much to cover 2400 ft 2 ?
    • Labels:
  • 15. “Lush-Lawn Fertilizer”
  • 16. Assignment
    • Page 168 : 13-45 odds