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43乘98的简便运算方法

43x98=43x(100-2)=43x100-43x2=4300-86=4216 答题不容易,望采纳,谢谢!!! 如有不懂,可追问!不采纳的,今后不再回答!

43×98=43×(100-2) =4300-86 =4214

乘法分配率 4214

43✘(100-2)=43✘100-43✘2=4300-86=4214

43 *98==43*(100--2) ==4300--86 ==4214

48×98 =48X(100-2) =48X100-48X2 =4800-96 =4704

98×43 =(100-2)×43 =100x43-2×43 =4300-86 =4214

98×42 =(100-2)×42 =100×42-2×42 =4200-84 =4116

75*98 =75*(100-2) =75*100-75*2 =7500-150 =7350 乘法分配律变式的逆运用。 乘法分配律:两个数的和与一个数相乘,可以先把它们分别与这个数相乘,再相加,得数不变,这叫做分配律。 字母表示:(a+b)×c=a×c+b×c 变式:(a-b)×c=a×c-b×c 逆运...

98x43 =(100-2)x43 =100x43-2x43 =4300-86 =4214 102x67 =(100+2)x67 =100x67+2x67 =6700+134 =6834

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