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Interpret mean to find our the meaning

Learning Objective : Use and interpret formulas to answer questions about quantities and their relationship. Interpret mean to find our the meaning. Work with your Partner plug in the x value to solve the rule. Why is it important use and interpret formulas?.

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Interpret mean to find our the meaning

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  1. Learning Objective: Use and interpret formulas to answer questions about quantities and their relationship Interpret mean to find our the meaning

  2. Work with your Partner plug in the x value to solve the rule

  3. Why is it important use and interpret formulas? We use formulas in everyday life such as carpentry, medicine and especially shopping

  4. formula- a set of symbols and variable in mathematics that expresses a rule. Example: the formula for finding the area of a rectangle is A = ℓxω A ω= 2 ℓ= 4

  5. Steps to using formulas Yonathan bought candy and gave an equal amount to his 8 cousins. He figured out how many pieces of candy each cousin would receive by using this formula Step 1 : Read the formula Step 2: Identify the operation Step 3: Plug in the values Step 4: Solve problem using formula Number of pieces per cousin (X) = Total number of pieces (Y) ÷ 8 How many pieces of candy did each cousin get if Yonathan bought 48? What if he bought 24 pieces? If each cousin got 2 pieces of candy how many total pieces did Yonathan buy? X = Y ÷8 X = 48 ÷ 8 X= 6 X = Y ÷ 8 X= 24 ÷ 8 X = 3 X = Y ÷ 8 2 = Y ÷ 8 2 x 8 = 16 Y = 16

  6. Steps to using formulas There are 28 students in Ms. Troy’s class. The number of boys in her class can be found using this formula Step 1 : Read the formula Step 2: Identify the operation Step 3: Plug in the values Step 4: Solve problem using formula Number of boys (B) = 28 – the number of girls (G) If there are 20 girls, how many boys are in her class? If there are 12 boys, how many girls are in her class? B = 28 - G B= 28 – 20 B = 8 B = 28- G 12= 28- G G = 28 – 12 = 16

  7. Steps to using formulas Janet sold water to raise money for a trip. This is the formula she used to figure out how much money she made Step 1 : Read the formula Step 2: Identify the operation Step 3: Plug in the values Step 4: Solve problem using formula $3 x the number of bottles of water (W) = total money she made ($) How much money did he make if he sold 5 bottles of water? If Janet made $ 30.00 how many bottles of water did she sale? 3 x W = $ 3 x 5 = $ $ = 15 3 x W = $ 3 x W = 30 W = 30 ÷ 3 = 10

  8. What did we learn about today?Why is it important? • Step 1 : Read the formula • Step 2: Identify the operation • Step 3: Plug in the values • Step 4: Solve problem using formula The area of a rectangle can be found using this formula Area = Length (ℓ ) x width (ω) What is the area of a rectangle that has the a length of 5cm and a width of 3cm? If the Area is 21in² and the length is 3in what is the width? A = l x w A = 5cm x 3cm A = 15cm² A = l x W 21 in² = 3in x W = 21 ÷ 3= 7 in

  9. Print slides 10-14 for homework

  10. There are 27 students in Mrs. Delpit’s class. The number of boys in her class can be found using this formula Number of boys (B) = 28 – the number of girls (G) If there are 20 girls, how many boys are in her class? If there are 12 boys, how many girls are in her class?

  11. Janet sold cake to raise money for a trip. This is the formula she used to figure out how much money she made $6 x the number cakes (C) = total money she made ($) How much money did he make if he sold 8 cakes? If Janet made $ 36.00 how many cakes did she sale?

  12. The area of a rectangle can be found using this formula Area = Length (ℓ ) x width (ω) What is the area of a rectangle that has the a length of 7cm and a width of 3cm? If the Area is 21in² and the length is 7in what is the width?

  13. Stacey bought candy and gave an equal amount to her 3 cousins. She figured out how many pieces of candy each cousin would receive by using this formula Number of pieces per cousin (X) = Total number of pieces (Y) ÷ 3 How many pieces of candy did each cousin get if Stacey bought 15? What if he bought 24 pieces? If each cousin got 2 pieces of candy how many total pieces did Stacey buy?

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