Question

89x22十89Ⅹ45十11x65=的简便祘法

89x22十89Ⅹ45十11x65=的简便祘法

Answer 1

89x22十89Ⅹ45十11x65

＝89×（2＋65）＋11x65

＝89×2＋89×65＋11×65

＝89×2＋65（89＋11）

＝178＋65×100

＝6678

Answer 2

89x22十89Ⅹ45十11x65
=89x(22+45+65)
=89x132
=(90-1)x132
=11880 -132
=11748

Answer 3

89x22十89Ⅹ45十11x65

=89x(22+46)+11x65
=89x65+11x65
=65x(89+11）
=65x100
=6500

Answer 4

89×22+89×45+（100-89）×65
=89×22+89×45+100×65-89×65
=89×（22+45-65）+100×65
=89×2+100×65
=178+6500
=6678

Answer 5

89x22+89x45 = 89x(22+45)
89x67 +11x65 =89x(65+2) +11x65
=(89+11)x65+89x2

Answer 6