Question

九点三七乘二点五的简便用算

• 你的回答被采纳后将获得：
• 系统奖励15（财富值+成长值）+难题奖励30（财富值+成长值）

Answer 1

2/9*3/8+0.375+7/9*37.5% =1/12+0.375+7/9*0.375 =1/12+0.375(1+7/9) =1/12+3/4*16/9 =/12+3/4 =17/12。2.5*0.7+0.3*25 =2.5*0.7+3*2.5 =2.5*3.7 =9.25 打字不易，6.5*9.9+0.65=6.5*(9.9+0.1)=6.5*10=65。2013乘于八分之三减零点三七五乘于一千九百五十二加三点七五乘于一点九 =2013*(3/8)-0.375*1952+3.75*1.9 =2013*0.375-0.375*1952+0.375*19 =0.375(2013-1952+19) =0.375*80 =30。九点三七-1又二十九分之八加小括号五点六三减二又二十九分之二十一的简便运算 9.37-1又8/29+(5.63-2又21/29) =(9.37+5.63)-(1又8/29+2又21/29) =15-4 =11。请采纳!。2.04*0.25*7.2*12.5 =0.51*(4*0.25)*9*(0.8*12.5) =0.51*1*9*10 =45.9。2.5x3.2x1.25 =2.5x(0.4x8)x1.25 =2.5x0.4x(8x1.25) =1x10 =10。3.2×2.5×12.5 =(4×2.5)×(0.8×12.5) =10×10 =100。2.7×5.4×3.9 =3×3×3×0.9×1.8×1.3 =56.862 拆开来算。八十四又十九分之四乘以一点三七五加一百零五分又十九分之五乘以零点九 =(80+80/19)x11/8+(100+100/19)x9/10 =80x11/8+80/19x11/8+100x9/10+100/19x9/10 =110+110/19+90+90/19 =200+200/19 =210又 10/19。