Question

va roggggggggggggggg urgent

Answer 1

1)10*1,7=17
10*21,3=213
10*0,31=3,1
100*10,01=1001
100*12,4=1240
12,25*0,1=1,225
12,25*0,01=0,1225
12,25*0,001=0,01225
300:100=3
1,35:100=0,0135
2,14:100=0,0214
2000:1000=2
11,3:1000=0,0113
2,35:1000=0,00235

2) 6,395*(835,67+164,33)=6,395*1000=6395

3) 3 ore si 30 min
1 ora=60 minute
60-30=30 min adica jumatate de ora
Rezulta 3 ore jumătate


4)4,3+x=10,3
X=10,3-4,3
X=6

4,6x=28,98
X=28,98:4,6
X=6,3
28,98:4,6=6,3
276
=138
138

4,9-x=2,18
-x=2,18-4,9
-x= - 2,72
X=2,72

1,936:x=3,2
X=1,936:3,2
X=0,605


5)
$\frac{30.25 + 43.56 + 59.29 + 77 .44}{1.21 \times (25 + 36 + 49 + 64)} =$
$\frac{210.54}{1.21 \times 174} = \frac{ 210.54}{210.54} = 1$