1)
a) 0,15•1,2+6,25:2,5=0,18+2,5=2,68
b) 17,57-0,2•3+1,44:1,2=17,57-0,6+1,2=16,97+1,2=18,17
c) 3,5+10³•(0,3)³-79,8:4,2=3,5+(10·0,3)³-79,8:4,2=
3,5+3³-19=3,5+27-19=11,5
d) 48:0,2+3,2²:1,6-4,3•0,1=240+10,24:1,6-0,43=240+6,4-0,43=246,4-0,43=245,97
La 2 poti sa folosesti calculatorul
3)
1)17,25 * 0,2=3,45
2)17,25 + 0,2=17,45
3)17,25 - 0,2=17,05
4)
a=(0,2)^100 * 25^50
=(0,2)^100 * (5^2)^50
=(0,2)^100 * 5^100
=(0,2 * 5)^100
= 1^100
b=0,25^25 * 0,04^25
=(25/100)^25 * (4/100)^25
=(100/10000)^25
=1/100^25
=1/10^50
^= putere
/= fractie
