Solve Mentally with conversion to decimals, no calculation of common denominators. Place the following in ascending order(smallest to largest)

Question

1/4
8/9
7/10
9/21
7/16
2/3
2/47
5/6
3/4
3/5
1/13
1/8

Answer 1

do what was suggested. As decimals, you have

.25 .88 .70 .42 ...

then sort them as desired.

Answer 2

Can you convert these fractions to decimals?

http://www.mathsisfun.com/converting-fractions-decimals.html

http://math2.org/math/general/arithmetic/fradec.htm

Answer 3

How would you solve this problem using mental math (no conversion to decimals, no calculations of common denominators)in ascending order. Explain how you placed each one

1/4
8/9
7/10
9/21
7/16
2/3
2/47
5/6
3/4
3/5
1/13
1/8

Answer 4

Hmmm. Originally it said to use conversion to decimals. Now you say no conversion and no common denominators. Unless you have a really good feel for relative values of fractions, I don't see any tricks to use to sort such a list.