addition and subtraction equations

Solve
34.7 = y + 5.3

• y = 29.4
• y = 30.4
• y = 28.4
• y = 40

Tags

CCSS.6.EE.B.7

How do you solve this equation?

• add 21 to both sides

• add 6 to both sides

• subtract 21 from both sides

• subtract 6 from both sides

Tags

CCSS.6.EE.B.7

How do you solve this equation?

• add 7 to both sides

• add 10 to both sides

• subtract 7 from both sides

• subtract 10 from both sides

Tags

CCSS.6.EE.B.7

Why is an equation often referred to as a balancing scale?

• Because it has the same answer on both sides.
• Both of the sides are equal and are kept in balance
• They are not called balancing scales
• It looks like a balancing scale

Tags

CCSS.7.EE.B.4A

Solve the equation.
201 = m + (-99)

• m = 202
• m = 298
• m = 102
• m = 300

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

Summarize how to solve the equation.
z + 8 = 23

• Subtract 23 from both sides of the equation.
• Subtract 8 from both sides of the equation.
• Throw z away!
• Add 8 to both sides of the equation.

Tags

CCSS.6.EE.B.7

Solve the equation.
15 = n + 7

• n = 22
• n = 7
• n = 8
• n = 9

Tags

CCSS.6.EE.B.7

Solve the equation.
-150 + y = 879

• y = 729
• y = 150
• y = 1,029
• y = 879

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.7

Solve the equation.
46 = n + 19

• n = 37
• n = 27
• n = 33
• n = 30

Tags

CCSS.6.EE.B.7

x - (-4) = 16

• 12
• 24
• 13
• 20

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7