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58x46 56x54怎么脱式计算

58x46 56x54怎么脱式计算 58x46 56x54 =56*46+2*46+56*54 =56*(46+54)+2*46 =5600+92 =5692

58x46 +56x54 =2668+3024 =5692

58x(225÷5÷9) =58x5 =290

1203+58x(64÷2) =1203+58×32 =1203+1856 =3059

42×(58+62)÷56 =42×120÷56 =5040÷56 =90

77-46+32 65-38+26 79+19-56 58-36+27 84-27+16= 4+27-16 93+23+94 69-(39-23) 99+(25-24) 77-76+32 61-38+26 79+19-16 16+77-26 18-36+27 87-27+16 30+(23-29) 73-23-4 93-(39-23) 71-(25-24) 99-46+32 65-39+26 99+99-56 56+94-26 59-36+2...

58X21-21X12 =(58-12)x21 =46x21 =46x(20+1) =520+46 =566

(1)603-(58+21×7)=603-(58+147)=603-205=398;(2)(27+33)×13-46=60×13-46=780-46=734;(3)(975-300)÷(300÷12)=675÷25=27;(4)45+(55÷5)-20=45+11-20=56-20=36;(5)532+342÷18×52=532+19×52=532+988=1520;(6)5400÷(210...

=1.58÷(20-22.1) =1.58÷(-2.1) =-79/105

=0.58(100-2) =58-1.16 =56.84

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