9 1/10 - 8 4/5
2007-12-03 12:08:45 · 5 answers · asked by nubian71 2 in Science & Mathematics ➔ Mathematics
I estimate 3/10. Although, you could solve it by finding the GCD:
9 1/10 - 8 8/10 = 3/10 --- because 4/5 = 8/10
2007-12-03 12:13:01 · answer #1 · answered by someone2841 3 · 0⤊ 0⤋
Multiply 9 by the denominator (10) then add the numerator(1) and put the whole thing over the original denominator:
(9x10) +1)/10 = 91/10
Do the same for the other one but first make sure that both equations have the same common denominator...so you have to multiply 4/5 by 2 so its 8/10 which is the same as 4/5 but not simplified:
(8x10)+8)/10=88/10
now subtract those 2 values:
91/10 - 88/10 = 3/10
Answer: 3/10 or .3
2007-12-03 12:15:41 · answer #2 · answered by Matty B 3 · 0⤊ 0⤋
9 and 5/10 is .5 and 1 is a tenth of 10...so 9.1 exactly...estimating would be 9
4/5 is almost a whole. so 8 4/5 is 9
2007-12-03 12:12:31 · answer #3 · answered by Birdie 2 · 0⤊ 0⤋
91/10-44/5=91/10-88/10=3/10
2007-12-03 12:12:37 · answer #4 · answered by someone else 7 · 1⤊ 0⤋
9 5/10= 10
-8/8/10= 9
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9 5/10=815/10
- 8 8/10
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7/10 =1
2007-12-03 12:20:59 · answer #5 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋