1.
350*46+250*46 = 46(350+250)= 46*600=27600
2.
4300-43*99 = 4300-(43*100+43)= 4300-4300+43=43
3.
128*32+872*32-1000*31 =32(128+872)-1000*31=32*1000-1000*31=32000-31000=1000
4.
728*359628*359+641*1000=359(728628)+641*1000=359*100+641*1000=35900641000=676900
1.
350*46+250*46 = 46(350+250)= 46*600=27600
2.
4300-43*99 = 4300-(43*100+43)= 4300-4300+43=43
3.
128*32+872*32-1000*31 =32(128+872)-1000*31=32*1000-1000*31=32000-31000=1000
4.
728*359628*359+641*1000=359(728628)+641*1000=359*100+641*1000=35900641000=676900