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36 99

36+99×36 =36×1+99×36 =36×(1+99) =36×100 =3600

36×(100-1) =36×100-36 =3600-36 =3564

36×99 =36×(100-1) =36×100-36×1 =3600-36 =3564

36*99=36*(100-1)=36*100-36*1=3600-36=3564

36×99+36 =36×(99+1) =36×100 =3600

36✖️99的简便运算 =36×(100—1) =36×100—36 =3600—36 =3564。

因为把36看做36×1,或者一个36。99个36加一个36是100个36。 36×99+36 =36×(99+1) =36×100 =3600

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想用乘法分配律,后面一个乘号,应当愀为加号, 36×99+36 =36×(99+1) =36×100 =3600。

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