Formulas & Rules
Which type of sequence uses adding and subtracting?
Arithmetic
What is being added or subtracted to each term to get the following term in the following arithmetic sequence?
11, 15, 19, 23, 27........
plus/adding 4
What is each term being multiplied or divided by to get the following term in the following geometric sequence?
1,2,4,8,16,32,64,128.....
multiplied by 2
What would the next term in the arithmetic sequence be?
15, 30, 45, 60, ____
75
What would the next term in the geometric sequence be?
3, 18, 108, ______
648
Which type of sequence uses multiplying and dividing?
Geometric
What is being added or subtracted to each term to get the following term in the following arithmetic sequence?
3,6,9,12,15.....
plus/adding 3
What is each term being multiplied or divided by to get the following term in the following geometric sequence?
10, 30, 90, 270, 810, 2430.........
multiplied by 3
What would the next term in the arithmetic sequence be?
92, 81, 70, 59, _____
48
What would the next term in the geometric sequence be?
600, 300, 150, ____
75
Is this formula for arithmetic or geometric sequences?
an=a1+(n-1)d
arithmetic
What is being added or subtracted to each term to get the following term in the following arithmetic sequence?
80,75,70,65,60......
minus/subtract 5
What is each term being multiplied or divided by to get the following term in the following geometric sequence?
4, -8, 16, -32, 64, -128.......
multiplied by -2
What would the next term in the arithmetic sequence be?
-6, -1, 4, ____
9
What would the next term in the geometric sequence be?
4, 16, 64, 256, ______
1024
Is this formula for arithmetic or geometric sequences?
a+ar+ar2+ar3+.....
geometric
What is being added or subtracted to each term to get the following term in the following arithmetic sequence?
7, 12, 17, 22, 27.....
add/plus 5
What is each term being multiplied or divided by to get the following term in the following geometric sequence?
1000, 200, 40, 8........
divided by 5
What would the next term in the arithmetic sequence be?
-6, -1, 4, ____
9
What would the next term in the geometric sequence be?
88, 440, 2200, ________
11,000
What does the r stand for in the formula for geometric sequences?
ratio
What is being added or subtracted to each term to get the following term in the following arithmetic sequence?
5, -8, -21, -34, -47
minus/subtract 13
What is each term being multiplied or divided by to get the following term in the following geometric sequence?
243, 81, 27, 9, 3, 1.....
divided by 3
What would the next term in the arithmetic sequence be?
-9, -2, 5, 12, ____
19
What would the next term in the geometric sequence be?
248,832, 20,736, 1728, _____
144