122+124+126+128+130+132+134简算
问题描述:
122+124+126+128+130+132+134简算
答
896
答
(122+134)+(124+132)+(126+130)+128=128*7=896
答
=(122+134)+(124+132)+(126+130)+128
=3*256+128
=6*128+128
=7*128
=896