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79十42十79十79x57用简便算法怎么算

题目有误, 应该是: 79×42+79+79×57用简便算法怎么算 79×42+79+79×57 =79×42+79×1+79×57 =(42+1+57)×79 =100×79 =7900

你好,应该是:79x42+79+79x57=79X(42+1+57)=79X100=7900

79X42+79X59-79=79X(42+59-1)=79X100=7900

(47+32)x(58-16) =79x42 =3318

79十42÷7先算除法再算加法 =79+6 =85

960÷237x42十37x38 =(960/237) x42十37x38 =(4又4/79)x42十37x38 =(4+4/79)x42+1406 =168+168/79+1406 =168+2+10/79+1406 =1576又10/79

79X42十79十79X52 =79(42+1+52) =79*95 =7505

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