Question

77×6+77

Answer 1

等于77乘6加77乘1等于77乘(6加1)等于77乘7等于539

追答

等于77乘6加77乘1等于77乘(6加1)等于77乘7等于539

Answer 2

=77×6+77×1
＝77×（6＋1）
=77×7
=539

Answer 3

=77×7

追答

504

Answer 4

=77×7=539

Answer 5

539