简便计算102✖️65=（100+2）x65=100x65+2x65=6500+130=6630
102 × 65= 65 × 100 + 130=6500 + 130= 6630
102×65
=100×65+2×65
=6500+130
=6630
解:（100+2）*65 =65*100+65*2 =6500+130 =6630
