Question

66×11+22×67=（） 简便计算

Answer 1

答：
66x11+22x67 66x11+22x67
=66x22/2+66x22+22 =66x11+66x11+66x11+11+11
=66x22x1.5+22 =11(66+66+66+1+1)
=22(66x1.5+1) =11x200
=22x100 =2200
=2200