Write an Equation Addition Equations Subtraction Equations.

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Presentation transcript:

Write an Equation

Addition Equations

Subtraction Equations

Problem Solving: Write an Equation

Modeling Equations

Mixed Review

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 Write an Equation Addition Equations Subtraction Equations Problem Solving Equations Modeling Equations Mixed Review

1-100 ⅔ of a number is 12.

1-100A What is ⅔n = 12.

1-200 A number divided by 6 is 30.

1-200A What is n ÷ 6 = 30.

½ decreased by a number is ½.

1-300A What is 3½ - n = ½.

¼ less than a number is 5.

1-400A What is n - 6¼ = 5.

1-500 Ben sold 250 boxes of apples during a fund- raiser. This was five times as many apples as Mary sold. Write an equation that represents this situation.

1-500A What is 5m = 250.

X + 6 = 15

2-100A What is x = 9.

2-200 y + 8⅔ = 16

2-200A What is 7⅓.

2-300 x = 16.2

2-300A What is x = 10.4.

= c

2-400A When is c = 7.6.

2-500 A carpenter cut a 72in. board into three pieces. One of the pieces is 24in. long and the other is one foot long. How long is the third piece?

2-500A What is 36in.

k – 5 = 2 60 x x 6 2 x 6

3-100A What is k= 7

3-200 z – 5.8 = 11.2

3-200A What is z = 17.0.

3-300 y - 9¼ = 18

3-300A What is y = 27¼

⅔ = s - 5¼

3-400A

3-500 Kendra sold 39 of the coins that were in her collection. She was left with 142 coins in her collection. This many coins were originally in her collection.

3-500A What is 181 coins.

Brett withdrew $175 from his checking account so he could go shopping for Christmas. His new balance is $234. (1)This algebraic equation represents this problem. (2)Brett has this much money in his account before his shopping spree.

4-100A What is n - $175 = $234 and n = $409

Sarah has climbed 87 of the 143 steps to the top of Avalanche Mountain. She has to climb this many more steps to get to the top. (1)This algebraic equation represents this problem. (2) This is the solution.

4-200A What is 87 + s = 143 s = 56 steps

Grandpa is 68 years old. He is 52 years older than his grandson, Adam. Adam is this old. (1)This algebraic equation represents this problem. (2) This is the solution.

4-300A What is 68 = 52 + a a = 16 years old

Mr. Hayes starts with the numbers 8 and 11. His class adds them to get the next number, 19. They use a + b = c to continue the pattern. In the pattern, the number 335 comes after 207. This is the number that comes before 207. (1)This algebraic equation represents this problem. (2) This is the solution.

4-400A What is a = 335 a = 128.

4-500 During the final game of a basketball tournament, the winning team scored a total of 97 points. The team scored 81 points by shooting field goals. The balance of the points was made by shooting free throws. This equation and solution shows how many points, p, were scored by shooting free throws.

4-500A What is 97 = 81 + p p = 16 points

The model below shows this equation. =

5-100A What is x + 4 = 7

5-200 This is the solution to the model below. =

5-200A What is x = 9

5-300 The model below shows this equation. This is the solution. =

5-300A What is x + 3 = 4 x = 1

5-400 This model represents the equation x + 6 = 13

5-400A What is. =

5-500 This is a model to represent an equation with a solution of x = 5.

5-500A What is = and other correct models.

x 432

6-100A What is 339,552

6-200 Evaluate 3n + 9n – 36 for n = 5

6-200A What is 24.

6-300 Evaluate 3 x (7 + 4) x 2 3

6-300A What is 264.

6-400 Solve Sandy has to be at the airport for a 5:20 P.M. flight. She wants to arrive 1 hr 15 min. early. If it takes 50 minutes to drive to the airport, when should she leave?

6-400A What is 3:15 P.M.

6-500

6-500A What is 30.

First write an equation then solve it to find the answer. a)When you subtract 50 from this number and then add 15, the result is 95. This is the mystery number. b)Jim, Marilee, and Sonia bought plane tickets. Together they spent $870. Jim’s ticket cost $235, and Marilee’s ticket cost $50 more than Jim’s ticket. How much did Sonia’s ticket cost? c)All equations must do this.

a) m = 95, m = 130 b) (235 50) + t = 870, t = $350 c) Balance!!

Daily Double Round 1