Răspunsuri

2014-09-24T17:57:01+03:00
Ordinul de marime al rezultatului.ex.30215 plus 9903.sau 99871 minus 50121
2014-09-24T18:12:14+03:00
A)20:(25-5)=20 :20=1
c)243:[61+80:(31-27)]=243:(61+80:4)=243:(61+20)=243:81=3
e)65:{8-75:[(4+9)ori 2-1]}=65:[8-75:(13*2-)]=65:[8-75:(26-1)]=65:(8-75:25)=65:(8-3)=65:5=13
b)17*(19-7)=17*12=204
d)[(147+265):4-53]:10=(412:4-53):10=103-53:10=50:10=5
f){[7+51:(6+11)]*6-4}:4=[(7+51:17)*6-4]:4=[(7+3)*6-4]:4=(10*6-4):4=60-4:4=56:4=14