Review Algebraic Equations (+ adding and - subtracting)

Vocabulary: A math sentence that shows two equal expressions

• algebraic expression

• equation

• variable

• coefficient

Tags

CCSS.6.EE.A.2C

To "SOLVE" an equation means

• the variable

• to substitute a number to the variable

• to find the unknown value of the variable

• to simplify the equation

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

An example of a pair of INVERSE operations

• addition and subtraction

• addition and multiplication

• subtraction and division

• subtraction and multiplication

Tags

CCSS.HSA.REI.A.1

Translate: A number increased by 10 is equal to 14

• n - 10 = 14

• 10 - n = 14

• n + 14 = 10

• n + 10 = 14

Tags

CCSS.6.EE.A.2

CCSS.6.EE.B.6

CCSS.6.EE.B.7

Solve:

n - 5 = 20

• 15

• -15

• 25

• -25

Tags

CCSS.6.EE.A.2

CCSS.6.EE.B.5

CCSS.6.EE.B.6

Solve:

n + 10 = 2

• 12

• 8

• -12

• -8

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.7

A number plus 8 results to 20. What is the number?

• 12

• 28

• -12

• -28

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

I am thinking of a number from 1 to 20. If the number is decreased by 7, the result is 10. What is the number?

• 13

• 3

• 17

• 10

Tags

CCSS.6.EE.A.2

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

Kristen is 5 years older than Mandy. Kristen is 13 years old now. How old is Mandy?

• 8 years old

• 13 years old

• 5 years old

• 18 years old

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

19  + a  =  -50

• a = -950
• a =  -69
• a = -31
• a = -50/19

Tags

CCSS.6.EE.B.7