5 Minute Check InIn your  

5 Minute Check Find the following. 1. 1.37 - .75

5 Minute Check Find the following. 1. 1.37 - .75 1.37 -.75 .62

5 Minute Check Find the following. 2. 3 4 - 5 9

5 Minute Check Find the following. 2. 3 4 - 5 9 9 9 x 3 4 - 5 9 x 4 4 27 36 - 20 36 = 7 36

5 Minute Check Find the following. 3. 2.34 – 1.23

5 Minute Check Find the following. 3. 2.34 – 1.23 2.34 -1.23 1.11

5 Minute Check Find the following. 4. 5 6 - 1 2

5 Minute Check Find the following. 4. 5 6 - 1 2 5 6 - 1 2 x 3 3 5 6 - 3 6 = 2 6 = 1 3

5 Minute Check Find the following. Which one represent her current score of 5?

5 Minute Check Find the following. Which one represent an unknown score on the first hole?

5 Minute Check Find the following. Which one represent a score of 3?

5 Minute Check Find the following. Can we write an equation to represent this drawing?

5 Minute Check Find the following. x + 3 = 5 How would we solve this mathematically?

5 Minute Check Find the following. x + 3 = 5 Subtract 3 from each side.

5 Minute Check Find the following. x + 3 = 5 What is the solution?

5 Minute Check Find the following. x + 3 = 5 x = 2

Lesson 6.7.2 Write and Solve Addition Equations Tuesday, Nov 11 Lesson 6.7.2 Write and Solve Addition Equations

Solve and Write Addition Equations Objective: To understand, solve and write addition equations.

Solve and Write Addition Equations An equation is a mathematical sentence showing two expressions are equal. An equation always has an equal sign. e.g. x + 3 = 5

Solve and Write Addition Equations e.g. x + 3 = 5 The left side = The right side

Solve and Write Addition Equations e.g. x = 2

Solve and Write Addition Equations An equation is only true if both sides are equal. A teeter totter will only be balanced if there is equal weight on both sides

Solve and Write Addition Equations When you replace a variable with a value that results in a true statement, you solve the equation. The value for the variable is the solution to the equation.

Solve and Write Addition Equations A variable is a symbol, usually a letter, used to represent a number.

Solve and Write Addition Equations A variable is a symbol, usually a letter, used to represent a number. A constant is a term without a variable.

Solve and Write Addition Equations How many constants are in the equation? x + 7 = 19

Solve and Write Addition Equations How many constants are in the equation? x + 7 = 19 Two, 7 and 19

Solve and Write Addition Equations How many constants are in the equation? y - 5 = 35

Solve and Write Addition Equations How many constants are in the equation? y - 5 = 35 Two, -5 and 35

Solve and Write Addition Equations How many constants are in the equation? - 5+ y = 35

Solve and Write Addition Equations How many constants are in the equation? - 5+ y = 35 Two, -5 and 35

Solve and Write Addition Equations Subtraction and Addition Property of Equality states if two expressions are equal and the exact same thing is added to or subtracted from both sides, the two sides will remain equal.

Solve and Write Addition Equations The goal in solving any algebraic equation is to get the variable on one side of the equal sign and a constant on the other side of the equal sign. e.g. x = 55

Solve and Write Addition Equations Solve. 8 = x + 3 write this down To Solve an Algebraic Equation. Step 1- Determine which side of the equation has the variable and a constant. Which side has the variable & constant?

Solve and Write Addition Equations Solve. 8 = x + 3 To Solve an Algebraic Equation. Step 1- Determine which side of the equation has the variable and a constant.

Solve and Write Addition Equations Solve. 8 = x + 3 To Solve an Algebraic Equation. Step 2 - Add the opposite of the variable side constant to both sides, making sure to line up the constants. What is constant on the right side?

Solve and Write Addition Equations Solve. 8 = x + 3 To Solve an Algebraic Equation. Step 2 - Add the opposite of the variable side constant to both sides, making sure to line up the constants. What is it’s opposite?

Solve and Write Addition Equations Solve. 8 = x + 3 -3 -3 write this down

Solve and Write Addition Equations Solve. 8 = x + 3 -3 -3 5

Solve and Write Addition Equations Solve. 8 = x + 3 -3 -3 5 = x

Solve and Write Addition Equations Solve. 8 = x + 3 Original Problem -3 -3 5 = x + 0 Work to be shown on homework.

Solve and Write Addition Equations Solve. c + 2 = 5 Step 1 - ?

Solve and Write Addition Equations Solve. c + 2 = 5 Step 2 - ?

Solve and Write Addition Equations Solve. c + 2 = 5 Original Problem -2 = -2 c + 0 = 3

Solve and Write Addition Equations Solve. 6 = d + 5 Do this on your own.

Solve and Write Addition Equations Solve. 6 = d + 5 -5 = -5 1 = d + 0

Solve and Write Addition Equations Solve. 3.5 + x = 12.75 Do this on your own.

Solve and Write Addition Equations Solve. 3.5 + x = 12.75 -3.5 = -3.50 annex zero 0 + x = 9.25

Solve and Write Addition Equations Solve. 456 + d = 1004 Do this on your own.

Solve and Write Addition Equations Solve. 456 + d = 1004 -456 = -456 0 + d = 548

Solve and Write Addition Equations Solve. t + 1 2 = 3 4

Solve and Write Addition Equations Solve. t + 1 2 = 3 4 - 1 2 = - 1 2 t = 3 4 - 1 2 ∙ 2 2 t = 3 4 - 2 4 = 1 4

Solve and Write Addition Equations Solve. t + 548 = 2545 Do this on your own.

Solve and Write Addition Equations Solve. t + 548 = 2545 -548 = -548 t = 1997

Solve and Write Addition Equations The total cost of a pair of skates and kneepads is $63. The skates cost $45. Write and solve an algebraic equation to find cost of the kneepads. Do this on your own.

Solve and Write Addition Equations The total cost of a pair of skates and kneepads is $63. The skates cost $45. Write and solve an algebraic equation to find cost of the kneepads. k + $45 = $63 -$45 = -$45 k = $18

Solve and Write Addition Equations Ruben and Tariq have 245.5 downloaded minutes of music. If Ruben has 132 minutes, how many belong to Tariq? Write and solve an algebraic equation to find how many minutes belong to Tariq.

Solve and Write Addition Equations Ruben and Tariq have 245.5 downloaded minutes of music. If Ruben has 132 minutes, how many belong to Tariq? Write and solve an algebraic equation to find how many minutes belong to Tariq. T + 132= 245.5 -132= -132.0 T = 113.5 minutes

Solving Addition Equations A hot air balloon is 200 feet in the air. A few minutes later it ascends to 450 feet. Write and solve an algebraic equation to find the change in altitude of the balloon. Do this on your own.

Solving Addition Equations A hot air balloon is 200 feet in the air. A few minutes later it ascends to 450 feet. Write and solve an algebraic equation to find the change in altitude of the balloon. 200 + x = 450 equation -200 = -200 0 + x = 250

Solving Addition Equations Zoey and her dog weighs 108 pounds. Zoey weighs 99 pounds. Write and solve an algebraic equation to find the dog’s weight. Do this on your own.

Solving Addition Equations Zoey and her dog weighs 108 pounds. Zoey weighs 99 pounds. Write and solve an algebraic equation to find the dog’s weight. 99 + x = 108 equation -99 = -99 0 + x = 9

Solve and Write Addition Equations A board that measures 19.5 meters in length is cut into two pieces. One piece measure 7.2 meters. Write and solve an algebraic equation to find the length of the other piece. Do this on your own.

Solve and Write Addition Equations A board that measures 19.5 meters in length is cut into two pieces. One piece measure 7.2 meters. Write and solve an algebraic equation to find the length of the other piece. 7.2 + y =19.5 equation -7.2 = -7.2 0 + y = 12.3

Solve and Write Addition Equations The table shows the heights of three monster trucks. Bigfoot 5 is 4.9 ft taller than Bigfoot 2. Write and solve an algebraic equation to find the height of Bigfoot 2. Do this on your own.

Solve and Write Addition Equations The table shows the heights of three monster trucks. Bigfoot 5 is 4.9 ft taller than Bigfoot 2. Write and solve an algebraic equation to find the height of Bigfoot 2. B + 4.9 =15.4 -4.9 = - 4.9 B = 10.5 ft

Solve and Write Addition Equations A board that measures 19.5 meters in length In the equation x + y = 5, the value for x is a whole number greater than 2 but less than 6. Determine the possible solutions for y.

Solve and Write Addition Equations A board that measures 19.5 meters in length In the equation x + y = 5, the value for x is a whole number greater than 2 but less than 6. Determine the possible solutions for y. x y 3 + 2 = 5 4 + 1 = 5 5 + 0 = 5

Solve and Write Addition Equations A board that measures 19.5 meters in length Identify the equation that does not belong with the other three. Explain your reasoning.

Solve and Write Addition Equations A board that measures 19.5 meters in length Identify the equation that does not belong with the other three. Explain your reasoning. x + 9 = 11, the solution for the other equations is 3.

Solve and Write Addition Equations Agenda Notes Homework – Homework Practice 6.7.2 Due Wednesday, Nov 12 Mid-Chapter 6.7 Quiz –Thursday, Nov 13