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55x32的脱式计算简便

可以把原题56*32堪称56*30+56*2=1680+112=1792这样就可以脱式计算了谢谢采纳

120+90= 543-306= 300÷12= 120*5= 12+18+14= 62+160+38= 14*60= 203-80= 50*15*4= 175-56= 250*8= 420*20= 25+67+75= 4500÷300= 25*38= 54+97= 560÷40= 145+55= 46+49+51= 9100÷70= 103*3= 28*99= 436+208= 323-197= 630÷45

25*42*4 68*125*8 4*39*25 4*25+16*25 4*25*16*25 36*99 (25+15) *4 (25*15)*4 49*49+49*51 49*99+49 (68+32)*5 5*289*2 68+32*5 (125*25)*4 (125 + 17)*8 25*64*125 85*82 + 82*15 25*97 + 25*3 64*15-14*15 125*88 88*102 87*99

0.4*125*25*0.8 =(0.4*25)*32313133353236313431303231363533e59b9ee7ad9431333335333133(125*0.8)=10*100=1000 1.25*(8+10) =1.25*8+1.25*10=10+12.5=22.5 9123-(123+8.8) =9123-123-8.8=9000-8.8=8991.2 1.24*8.3+8.3*1.76

128X32=

45.55-(6.82+15.55) 34.52-17.87-12.23 6.43-(1.4-0.57) 23.75-8.64-3.46 17.83-9.5-7.83-0.5 5.38+88.2-2.38+1.8 27.38-5.34+2.62-4.66 21.63-(8.5+9.63) 7.5-2.45+7.5+2.45 5.09-(0.09+1.23) 9.36-(4.36-3.5) 609-708+306-108+202-198+497-100

=(10+0.1)乘以55 =10乘以55+0.1乘以55 =550+5.5 =555.5

55*104=55*(100+4)=55*100+55*4=5500+2020=7520

[(3+4)*(7-5)]÷(1/4)=[7*2]÷(1/4)=[7*2]*4=14*4=56

(1)94+38+106+62 (2) 125*15*8 (3) 25*32*125 (4)125÷25*8 (5) 125*48 (6)989-186-14 (7)4600÷25÷4 (8)136*101-136 (9)32*37+47*37+21*37 (10)99*77+77 (11 99*8 (12)78*37-37*68 (13)89*99+89 (14)52*15-5*52 (15) 55*102 (16)125*64

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