Arithmetic Sequence

What's the Meaning

100

notation for the first term

 a₁

200

What is the meaning of the "nth" term

What is any term

300

the number of terms is represented by which letter

What is "n"

400

the common difference is represented by which letter

What is "d"

500

a_n=a₁+(n-1)d or a_n=a₁+d(n-1)

What is explicit formula

Arithmetic Sequence or Nah?

100

8,10,12,14,16

What is arithemtic

200

2,6,10,16,22,26

What is nah

300

4.25,4.55,4.85,5.15,5.45

What is arithmetic

400

4,8,16,32,64

What is nah

500

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

What is arithmetic

What is the common difference?

100

5,8,11,14,17

What is 3

200

-8, -3, 2, 7, 12

What is 5

300

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

What is -60

400

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

What is 1/4

500

4.5, 3.75, 3, 2.25, 1.5

What is -0.75

Find the nth term...

100

Find a₁₆ given a₁=9 and d=2

What is 39

200

Find a₂₀₀ given a₁=-40 and d=5

What is 955

300

Find a₁₀ given a₁= -8 and d= 10

What is 82

400

Find a₅₀ given a₁= 14 and d=-0.25

What is 1.75

500

Find a₁₂ given a₁= 6 and d = 1/2

What is 23/2

Up in the air...

100

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

What is -4

200

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

What is 6

300

Write a formula for the sequence: 7,3,-1,-5

What is an=7+(n-1)(-4)

400

Write a formula for a₁= -70 and d=-5

What is an= -70 + (n-1)(-5)

500

Find a₂₀ given the formula: a_n=-20 + (n-1)(-4)

What is -96