Arithmetic Sequence

Represent Me!

100

the first term

a₁

200

How do we represent the 30th term?

a₃₀

300

the number of terms

"n"

400

the common difference

"d"

500

an=a1+(n-1)d

arithmetic sequence

Arithmetic Sequence or Nah?

100

8,10,12,14,16

arithemtic

200

2,6,10,16,22,26

nah

300

4.25,4.55,4.85,5.15,5.45

 arithmetic

400

4,8,16,32,64

nah

500

3/4, 1, 5/4, 3/2, 7/4, 2

arithmetic

What is the common difference?

100

5,8,11,14,17

3

200

-8, -3, 2, 7, 12

5

300

200,140,80,20,-40,-100

-60

400

3/2, 7/4, 2, 9/4, 5/2, 11/4

1/4

500

4.5, 3.75, 3, 2.25, 1.5

 -0.75

Find the nth term...

100

Find a16 given a1=9 and d=2

39

200

Find a200 given a1= -40 and d= 5

955

300

Find a10 given a1= -8 and d= 10

82

400

Find a50 given a1= 14 and d=-0.25

1.75

500

Find a12 given a1= 6 and d = 1/2

23/2

Up in the air...

100

Identify the d in the arithmetic sequence formula: an=7+(-4)(n-1)

-4

200

Identify the a1 in the arithmetic sequence formula: an=6+(n-1)-5

6

300

Identify the next term: 7,3,-1,-5

-9

400

What is the second term if a1= -70 and d=-5

-75

500

1, 2, 3, 4, 5, what is 1,000,000th term

1,000,000