bell work x - 7 = -1 x - 4 = 66 8 = x - 2 -8 = x - 2 x = 6 x = 70 x = 10 x = -6

11
BELL WORK X - 7 = -1 X - 4 = 66 8 = X - 2 -8 = X - 2 •X = 6 •X = 70 •X = 10 •X = -6

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Page 1: BELL WORK X - 7 = -1 X - 4 = 66 8 = X - 2 -8 = X - 2 X = 6 X = 70 X = 10 X = -6

BELL WORK•X - 7 = -1

•X - 4 = 66

•8 = X - 2

• -8 = X - 2

• X = 6

• X = 70

• X = 10

• X = -6

Page 2: BELL WORK X - 7 = -1 X - 4 = 66 8 = X - 2 -8 = X - 2 X = 6 X = 70 X = 10 X = -6

MODELING THE EQUATION USING A BAR DIAGRAM

Page 3: BELL WORK X - 7 = -1 X - 4 = 66 8 = X - 2 -8 = X - 2 X = 6 X = 70 X = 10 X = -6

253 Competitors

Page 4: BELL WORK X - 7 = -1 X - 4 = 66 8 = X - 2 -8 = X - 2 X = 6 X = 70 X = 10 X = -6

Use the model to write and solve an equationX + 134 = 253

or 134 + x = 253

X = 119 boys

Page 5: BELL WORK X - 7 = -1 X - 4 = 66 8 = X - 2 -8 = X - 2 X = 6 X = 70 X = 10 X = -6

Use the model to write and solve an equationX – 15 = 119

X = 134 girls

Page 6: BELL WORK X - 7 = -1 X - 4 = 66 8 = X - 2 -8 = X - 2 X = 6 X = 70 X = 10 X = -6

Use the model to write and solve an equationX + 15 = 134

X = 119 boys

Page 7: BELL WORK X - 7 = -1 X - 4 = 66 8 = X - 2 -8 = X - 2 X = 6 X = 70 X = 10 X = -6

Use the model to write and solve an equationX + 119 = 134

X = 15 more girls

Page 8: BELL WORK X - 7 = -1 X - 4 = 66 8 = X - 2 -8 = X - 2 X = 6 X = 70 X = 10 X = -6

A used book costs $17 less than the same book new. The used book costs $9. Use a bar diagram to write and solve an equation to find out how much the new book cost. 

?

New book

Used book

17 9

X – 9 = 17

X = $26 for a new book

Page 9: BELL WORK X - 7 = -1 X - 4 = 66 8 = X - 2 -8 = X - 2 X = 6 X = 70 X = 10 X = -6

Use a bar diagram to write and solve an equation to find out how many hits he got in the second game. .

X – 1 = 5

X = 4 hits in the second game

Page 10: BELL WORK X - 7 = -1 X - 4 = 66 8 = X - 2 -8 = X - 2 X = 6 X = 70 X = 10 X = -6

USE THE MODEL TO WRITE AND SOLVE AN EQUATION

X + 4 = 7

X = 3

Page 11: BELL WORK X - 7 = -1 X - 4 = 66 8 = X - 2 -8 = X - 2 X = 6 X = 70 X = 10 X = -6

USE THE MODEL TO WRITE AND SOLVE AN EQUATION

X + 2 = 6

X = 4