Equations and Patterns

Start at 99, alternately subtract 9 then add 11

• 99, 90, 101, 102, 113

• 99, 91, 100, 91, 102

• 99, 90, 101, 92, 113

• 99, 90, 102, 93, 104

Edward's pizza had 23 pepperonis. Then he picked off n pepperonis. Now there are 12 pepperonis left. What algebraic equation shows this situation?

• 12n = 23

• n + 23 = 12

• 23 + 12 = n

• 23 - n = 12

How would you describe this pattern's rule?
65, 62, 59, 56, 53, 50

• Subtract 2

• Subtract 3

• Subtract 4

• Add 3

If you extended the pattern, how many dots would come next?

• 16

• 20

• 25

• 30

What is the rule in the pattern?
500, 100, 20, 4

• Subtract 200

• Divide 6

• Subtract 100

• Divide 5

48 + 14 = ____ + 19

• 43

• 14

• 53

• 62

4 x 6 = N x 2
N =

• 13

• 11

• 12

• 10

Solve the equation: 
x + 7 = 12

• x = 5

• x = 19

• x = 4

• x = 84

What rule is being used in the pattern below?
2, 4, 6, 8, 10, 12

• multiply by 2

• subtract 2

• add 2

• divide by 2

What is the next term (number) in this pattern?
10, 20, 30, 40, __,

• 41

• 45

• 50

• 55