解答
67×101-67
=67×(101-1)
=67×100
=6700
67×101-67
=67×(101-1)
=67×100
=6700
解答 67×101-67 =67×(101-1) =67×100 =6700
67×101-67=67×(101-1)=67×100=6700
乘法分配律为:两个数的和与一个数相乘,先将它们与这个数分别相乘,再相加,积不变.即:(a+b)×c=a×c+b×c.反过来则:a×c+b×c=(a+b)×c
67×101-67
= 67× ( 101-1)
= 67×100
= 6700