Question

1111✘58 6666✘7简便怎样算？

Answer 1

1111✘58+ 6666✘7
=1111x58+1111x6x7 (6666=1111x6 再利用乘法结合律6x7=42)
=1111x(58+42) (运用乘法分配律)
=1111x100
=111100

Answer 2

1111✘58+ 6666✘7
=1111x58+1111x6x7
=1111x（58+42）
=1111x100
=111100