72x1.25简便计算

关妍庄22622.4x0.7x1.25简便计算 -
水敬董19241165838 ______ =0.8*3*0.7*1.25=3*0.7*1=2.1

关妍庄22621.6*7.5*1.25的简便计算? -
水敬董19241165838 ______ 1.6*7.5*1.25的简便计算 =2x0.8x7.5x1.25 =(2x7.5)x(0.8x1.25) =15x1 =15

关妍庄226296*1.25简便计算很需要.. -
水敬董19241165838 ______ 96*1.25=(100-4)*1.25=125-5=120 =12*8*1.25=120

关妍庄22621.25x49十1.25的简便计算 -
水敬董19241165838 ______ 1.25+-

关妍庄2262简便计算:70.8 - 1.25 - 1 -
水敬董19241165838 ______ (1)70.8-1.25-1.75 =70.8-(1.25+1.75) =70.8-3 =67.8; (2)7.2*4.8+7.2*5.2 =7.2*(4.8+5.2) =7.2*10 =72; (3)0.25*17.3*4 =0.25*4*17.3 =1*17.3 =17.3; (4)0.25*(4+0.4) =0.25*4+0.25*0.4 =1+0.1 =1.1.

关妍庄22629/1.25简便计算 -
水敬董19241165838 ______ 9/1.25简便计算 9/1.25 =(9*8)÷(1.25*8) =72÷10 =7.2

关妍庄2262(1.25十2.5)x8简便计算 -
水敬董19241165838 ______ (1.25十2.5)x8简便计算 (1.25十2.5)x8 =1.25*8+2.5*8 =10+20 =30

关妍庄22621.25x79x1.2简便计算 -
水敬董19241165838 ______ 简便计算1.25x79x1.2=1.25*1.2*79=1.5*79=118.5

关妍庄22627.8—8.75十2.2—1.25(简便计算7 -
水敬董19241165838 ______[答案] 7.8—8.75十2.2—1.25 =(7.8+2.2)-(8.75+1.25) =10-10 =0

关妍庄22621.6x7.8x1.25怎么简便计算 -
水敬董19241165838 ______[答案] 1.6x7.8x1.25 =2*0.8*7.8*1.25 =2*7.8*(0.8*1.25) =2*(8-0.2)*1 =16-0.4 =15.6