a)4,2*(7+3)= b)12/5*(5/3+10/4)= c)0,4*(20-5)= d)(2/3-1/6)*4= e)1,2*(1,4+3,6)= f)(7/5-6/5)*55/4= g)(11,4+20,2)*5,0= h)4,2*6+4,2*4= i)22/100*5-15/50*5= k)3*1,2+1,2*2=…
A)4,2*(7+3)= b)12/5*(5/3+10/4)= c)0,4*(20-5)= d)(2/3-1/6)*4= e)1,2*(1,4+3,6)= f)(7/5-6/5)*55/4= g)(11,4+20,2)*5,0= h)4,2*6+4,2*4= i)22/100*5-15/50*5= k)3*1,2+1,2*2= l)7/3*23/4-7/3*46/8= m)2/3*12-3*2/3= m)0,5*11-7*0,5= o)1200*0,3+1200*0,05= p)1,2*6,4-1,2*1,4= q)2,5*1,5+2,5*2,5= r)(3/200-0,005)*200= s)(3,2-6/5)*5= t)1/12*0,235+11/1*0,235= u)8/5*2,25-1/4*8/5= v)5,2*5,4-52/10*4/10= w)7,3*(13/5+7,4)= x)(1/12+7/3-7/8)*24= y)4,3*4+4*6,5-3,8*4= z)0,8*2,5+0,8*3,4-0,8*1,9=
a) 4,2*(7+3) = 4,2*(10) = 42
b) 12/5*(5/3+10/4) = 12/5*(15/12+30/12) = 12/5*(45/12) = 18
c) 0,4*(20-5) = 0,4*(15) = 6
d) (2/3-1/6)*4 = (4/6-1/6)*4 = (3/6)*4 = 2
e) 1,2*(1,4+3,6) = 1,2*(5) = 6
f) (7/5-6/5)*55/4 = (1/5)*55/4 = 11/4 = 2,75
g) (11,4+20,2)5,0 = 31,65 = 158
h) 4,26+4,24 = 25,2
i) 22/1005-15/505 = 0,225-0,35 = 1,1-1,5 = -0,4
k) 31,2+1,22 = 3,6+2,4 = 6
l) 7/323/4-7/346/8 = (161/12)-(161/24) = 161/12-80,5/6 = 161/12-40,25 = 1207/60 = 20,11
m) 2/312-32/3 = 8-6 = 2
n) 0,511-70,5 = 5,5-3,5 = 2
o) 12000,3+12000,05 = 360+60 = 420
p) 1,26,4-1,21,4 = 7,68-1,68 = 6
q) 2,51,5+2,52,5 = 3,75+6,25 = 10
r) (3/200-0,005)*200 = (0,015-0,005)200 = 0,01200 = 2
s) (3,2-6/5)*5 = (3,2-1,2)5 = 25 = 10
t) 1/120,235+11/10,235 = 0,0196+11*0,235 = 0,0196+2,585 = 2,61
u) 8/52,25-1/48/5 = 1,44-0,4 = 1,04
v) 5,25,4-52/104/10 = 28,08-5,2*0,4 = 28,08-2,08 = 26
w) 7,3*(13/5+7,4) = 7,3*(2,6+7,4) = 7,3*10 = 73
x) (1/12+7/3-7/8)*24 = (2/24+56/24-21/24)*24 = (34/24)*24 = 34
y) 4,34+46,5-3,8*4 = 17,2+26-15,2 = 28
z) 0,82,5+0,83,4-0,8*1,9 = 2+2,72-1,52 = 3,2
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