Odpowiedzi

2009-10-05T18:36:58+02:00
2/5 - 5 + 1/3= 6/15 - 5 + 5/15= -4 4/15

3+2*2/5= 3 + 4/5= 3 4/5

3/4+1/4*8= 3/4 + 8/4 = 11/4= 2 3/4

8*(1/4+0,25)= 8*(0,25+0,25)= 8*0,5= 4

1,6-0,6:2= 1:2= 1/2

5i1/5-1/5*10= 26/5 - 10/5= 16/5= 3 1/5
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2009-10-05T18:45:29+02:00
1.2/5 - 5 + 1/3 =2/5 - 5/1 + 1/3 = 6/15 - 75/15 + 5/15 = - 64/15 = - 4 4/15
2.3 + 2 * 2/5 =3 + 2/1*2/5 = 3 + 4/5 = 3 4/5
3. 3/4 + 1/4 * 8 = 3/4 * 2 = 3/2 = 1 1/2
4. 8 * (1/4 + 0,25) =8 * ( 1/4 + 1/4 ) = 8 * 2/4 = 8 * 1/2 = 4
5. 1,6 - 0,6 : 2 = 1,6 - 0,3 = 1,3
6. 5 1/5 - 1/5 * 10 = 5 1/5 - 2 = 3 1/5
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2009-10-05T18:57:17+02:00
A) 2/5-5+1/3 =2/5-5/1+1/3=6/15-75/15+5/15=- 64/15=-4 4/15
b) 3+2 *2/5=3+2/1*2/5=3+4/5=3 4/5
c) 3/4+1/4 *8= 3/4 * 2 = 3/2 = 1 1/2
d) 8 *(1/4 + 0,25) =8 *(1/4 + 1/4) =8 * 2/4 =8 * 1/2 = 4
e) 1,6 - 0,6 : 2 = 1,6 - 0,3 = 1,3
f) 5 1/5-1/5 *10 = 5 1/5-2=3 1/5
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