SEGUNDA TA 1ª4 T.MAT 28/08/2009

1.- ((6/14)(2/13)/(5/2))+ 2/7 =
6/14*2/13=
12/182 /5/2=
24/910+2/7=
168+1820/6370=
1988/6370=
994/3185

2.- 9/7 + 6/5 -18/12 -1/5 =
9/7+6/5=
45+42/35=
87/35

3.- 3/9 - 16/4 +25 =
6/9+25/1=
3+225/9=
228/9-16/4=
912-144/33=
768/33=
256/11

4.- 25 - 16 - 48 - 76 + 65 + 82 - 45 + 12 =
25+65+82+12-16-48-76-45=
25+65+82+12=
184
-16-48-76-45-185=
184-185=
-1

5.- (2)(-9)(3)(-8)(7)(-6)(5)(4)(16)(-2) =362880
-18
-54
-432
3024
18144
90720
362880


6.- 11/3 + 22/8 -3/4 =
11/3+22/8=
88+66/24=
154/24-3/4=
72-462/96=
-390/96=
-130/32=
-65/12

7.- ((13/6)(33/4)/(19/16)) + 22 -18 =
13/6*33/4=
429/24=
143/8 / 19/16=
2288/128=
1144/64=
572/32=
286+22/1=
286+22/16=
308/16=
154/8


8.- 17 - 13 +62 -((33/3)(15/3)/3) =
33/3*15*3=
495/9=
495 / 9=
55
-17-13+62+55 / 3=
-30+62+55 / 3=
-30+117 / 3=
87 / 3=
29


9.- (17)(1/5)(-4)(-6)(-2/7)(1/6)(45/6)(-2)=
17/1*1/5=
17/5-4/1=
17-20/5=
-3/5-6/1=
-3-30/5=
-33/5-2/7=
231-10/35=
241*1/6=
241/30*54/
=10845/180*2/1=
21690/180=
4338/36=
1446/12=
482/4=
241/2

10.- -15 +15 -48 -65 -36 +52 +89 -79 +62 -69 =
+15+52+89+62-15-48-65-36-79-69=
+15+52+89+62=
218
-15-48-65-36-79-69=
-312
+218-312=
-94