3 1/2 multiplied by 5 1/10???
and
3 1/2 multiplied by 4 1/2??? plz help me i dont want to get an F?!?!?!?!
2007-03-11 16:56:17 · 6 answers · asked by Muh-Kay-Luh cArTeR :]] 1 in Science & Mathematics ➔ Mathematics
change it from mixed fraction
7/2*51/10=357/20
7/2*9/2=63/4
2007-03-11 17:01:58 · answer #1 · answered by Anonymous · 0⤊ 0⤋
There may be other ways that this is taught in your school, but I would convert each number to an IMPROPER FRACTION and then multiply out the numbers. In your first examle,
3 1/2 = 3x2/2 + 1/2 = 7/2
5 1/10= 5x10/10 + 1/10 = 51/10
Then 7/2 x 51/10 = 357/20 = 17 17/20
The second problem becomes 7/2 x 9/2 = 63/4
= 15 3/4
Good luck on your test.
2007-03-12 00:05:25 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋
3 1/2 = 7/2
5 1/10 = 51/10
7/2 * 51/10 =357/20
4 1/2= 9/2
7/2 * 9/2= 63/4
2007-03-12 00:03:03 · answer #3 · answered by essebful 2 · 0⤊ 0⤋
3 1/2 times 5 1/10
Convert them both to an improper fraction.
7/2 times 51/10
Multiply numerators and denominators.
357/20
2007-03-12 00:02:37 · answer #4 · answered by Puggy 7 · 0⤊ 0⤋
3 1/2 = 7/2
5 1/10 = 51/10
a) 7/2 * 51/10 = (7 * 51) over (2 * 10) = 357/20
b) 7/2 * 9/2 = 7*9 over 2 * 2 = 63/4
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2007-03-12 00:05:59 · answer #5 · answered by aeiou 7 · 0⤊ 0⤋
3.5 x 5.1 = 17.85
3.5 x 4.5 = 15.75
or 7/2 x 51/10 = 7x51 = 357/ 2x10 = 20 ; 357/20 = 17.85 etc
2007-03-12 00:09:50 · answer #6 · answered by Anonymous · 0⤊ 0⤋