Yes.
No.
no
Yes.
yes
no, three-fourths equals fifteen-twentieths, which is larger than thirteen-twentieths
Since the numerator is smaller than the denominator, there is no need to express 18/20 as a mixed number.
a third
for starters it is negative seven not minus seven. and yes it is smaller than six because zero is the middle and since negative seven is smaller than it and six is larger it is obvious that negative seven is smaller.
No - expressed as a decimal, 12/20 is equal to 0.6.
No because one half is equivalent to ten twentieths!
No, if you convert 3/4 into twentieths you get 15/20 which is lower than 17/20.
Smaller than? Where? More detail needed