Oblicz wartosc wyrazenia na dwa sposoby :
a) 1¹₁₀ + 2,4*(1¹₂+7,3)
1 sposob
2 sposob
b) (7,85 +4³₄)*1,8
1 spos.
2 spos.
c) 2,4*(2¹₄ +7,5)*0.1-8.8 : 1¹₁₀
1 spos.
2 spos.
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a) 1¹₁₀ + 2,4*(1¹₂+7,3)
1 sposob =1,1+2,4(1,5+7,3)=1,1+2,4*8,8=1,1+21,12=22,22
2 sposob = 1 1/10 + 2 4/10*(1 5/10 + 7 3/10)=1 1/10+2 4/10*8 8/10=1 1/10+24/10* 88/10=1 1/10 +2112/100=11/10 +2112/100=110/100 +2112/100=2222/100=22 22/100=22 11/50
b) (7,85 +4³₄)*1,8
1 spos. =(7,85 + 4,75)*1,8=12,6*1,8=22,68
2 spos.=(7 85/100 +4 3/4)*1 8/10=(7 17/20 +4 3/4)*18/10=(7 34/40 +4 30/40)*18/10=11 64/40 *18/10=12 3/5 *9/5= 63/5*9/5=567/25=22 17/25
c) 2,4*(2¹₄ +7,5)*0.1-8.8 : 1¹₁₀
1 spos.=2,4*(2,25+7,5)*0,1-8,8:1,1=2,4*10*0,1-8=2,4-8=-5,6
2 spos.=2 2/5*(2 1/4 + 7 1/5)*1/10-8 8/10: 1 1/10=2 2/5*(2 5/20+7 4/10) *1/10-88/10:11/10=2 2/5*9 9/20*1/10-8= 12/5*189/20*1/10-8= 2268/1000-8= 567/250-2000/250=1433/250=5 183/250