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How can you use a pattern to add 20 plus 30 plus 40 plus 50 plus 60 plus 70 plus 80?
Wiki User
∙ 13y ago
x *10 + (x-1) * 10
if all x are whole numbers greater than 2 and less than 8
Note: if you are using sum notation you just need x * 10 from n=2 to n=8
Wiki User
∙ 13y ago
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50 plus 20 plus 20 plus 20 plus 20 plus 10 plus 5 plus 5 plus 5 equals?
The answer is 155. Simply add up all of the numbers arithmetically like you would for two plus two. To make sure the answer is correct, check your work using a calculator.
What is 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20 plus 20?
20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 = 400.
If you divide twenty by half and add 30 what do you get?
The answer is: 20/2 plus 30 = 40
What is the pattern of 98 72 77 49 54 20?
it add 26
How much is 250 plus 20 percent?
20 percent of 250 is equal to 50, therefore if you add 50 to 250 you get 300.
If you add 20 plus 20 what is the answer?
40...
What number should you add to -8 to get plus 12?
You add 20
30 plus .20 plus .007?
They add up to: 30.207
What is -0.5x2 plus 2x plus 10?
Doesn't factor evenly, use quadratic -.5xx+2x+10 -.5(xx-4x-20) No factors of -20 add up to -4
What is the answer to Add -6 plus -14?
-20
27 plus 8?
If you add 27 and 8, the answer is 35. 7 plus 8 is 15 and add it to 20, the answer is 35.
What 7coins make 20 cents?
A dime plus a nickel plus 5 pennies add up to 20 cents.
50 plus 20 plus 20 plus 20 plus 20 plus 10 plus 5 plus 5 plus 5 equals?
The answer is 155. Simply add up all of the numbers arithmetically like you would for two plus two. To make sure the answer is correct, check your work using a calculator.
3 plus 4 times 5 plus 2?
You take 4 times 5 which is 20 then 3 plus 2 which is 5. Add 20 plus 5 and you get 25. That's the answer.
Add the following start with 1000 plus 40 plus 1000 plus 30 plus 1000 plus 20 plus 1000 plus 10?
4100
What is 12 percent plus 20 percent?
12 percent plus 20 percent equals 32 percent. To add one percentage to another simply add the numbers together and keep the percentage sign.
What is the pattern for 17 20 13 16?
you add 3 then subtract7
