300÷125÷8=300÷ï¼125Ã8ï¼=300÷1000=0.3
396-96-172-28 =ï¼396-96ï¼-ï¼172+28ï¼= 300-200 = 100
125*24 = 125*8*3 = 1000*3 = 3000
26*15 = ï¼20+6ï¼*15 = 20*15 + 6*15 = 300+90 =390
25*99*4 = 25*4*99 = 100*99 = 9900
250*32 = 250*4*8 = 1000*8 = 8000
ï¼98+98+98+98ï¼*25 = 4*98*25 = 4*25*98 = 100*98 = 9800
472*5*20 = 472*ï¼5*20ï¼= 472*100 = 47200
125*ï¼8+800ï¼= 125*8+125*800 = 1000 + 100000 = 101000
129*38+38*872-38 = 38*ï¼129+872-1ï¼=38*1000=38000
18*8*125*5 = 18*5*ï¼125*8ï¼=90*1000 = 9000
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