4x60x50x8 47X(45+225÷45) (100-1456÷26)x78 12400÷25 =(4×50)×(60×8) =47×(45+5) =(100-56)×78 =(12400×4)÷(25×4) =200×240 =47×50 =44×78 =49600÷100 =48000 =2350 = 3432 =496 2.(1)40÷2-8=12分米 (2)(151-1 ) ×7 =1050米=1.05千米 1.05 ÷3 ×60= 21千米
1.简便计算(脱式)4x60x50x8 47X(45+225除以45) (100-1456除以26)x78 12400除