<span>3,75*2,05+0,05*30,48=9,2115 (</span><span>≈9,2)
1) </span><span>3,75*2,05=7,6875
2) </span><span>0,05*30,48=1,524
3) 7,6875+1,524=9,2115
</span>
7,5*0,4+3,2*0,17=3,544 (<span><span>≈3,5)
</span>1) </span><span>7,5*0,4=3
2) </span><span><span>3,2*0,17=0,544
</span>3)3+0,544=3,544
</span>
7,1*1,3-0,19*5,02=8,2762 (<span><span>≈8,3)
</span>1) </span><span><span>7,1*1,3=9,23
</span>2) </span><span><span>0,19*5,02=0,9538
</span>3) 9,23-0,9538=8,2762</span>