What’s the decimal of 3 9/10

3.9

Step-by-step explanation:

3 is your whole number so it would be before the decimal point. I'll let you in on a cool trick my algebra teacher taught me, if you have a fraction and you need to make it a decimal the whole number is in front of the decimal point but what about the fraction part of it? Well think of it like this no matter what value of ten that you have (10, 100, 1000) think of the point as the number 1. (I don't know if this works on other numbers that aren't 10, 100, 1000 etc.).

3.00

  10

so if you look at the demonstration above you can see that for the fraction 9/10 you would put the 9 right after the decimal point, if it was 100 the decimal would be 3.09. so basically if its one number like 9 you would put it wherever the last 0 is if its two numbers like 97 out of 100 your decimal would be 3.97. I hope this makes sense and sorry for making this so long!

you need a common difference between consecutive terms to be constant, like 1,2,3,4 or 2,4,6,8, or 1,3,6,9