84/3+884/3+8884/3+88884/3怎么简便计算急!1

Question

84/3+884/3+8884/3+88884/3 怎么简便计算 急!1

Answer 1

84 = 21 X 4 = 3 X 7 X 4 = 3 X 28
那么
84/3 + 884/3 + 8884/3 + 88884/3
= 84/3 + ( 800/3 + 84/3 ) + ( 8800/3 + 84/3 ) + ( 88800/3 + 84/3 )
= 28 + ( 800/3 + 28 ) + ( 8400/3 + 400/3 + 28 ) + ( 84000/3 + 4800/3 + 28 )
= 28 X 4 + 800/3 + 400/3 + 8400/3 + 84000/3 + 4800/3
= 25 X 4 + 3 X 4 + 1200/3 + 2800 + 28000 + 1600
= 100 + 12 + 400 + 1600 + 2800 + 28000
= 112 + 2800 + 28000 + 2000
= 2912 + 30000
= 32912
83/4 + 883/4 + 8883/4 + 88883/4
= 3/4 X 4 + 80/4 + 880/4 + 8880/4 + 88880/4
= 3 + 20 + 220 + 2220 + 22220
= 3 + 240 + 2220 + 22220
= 3 + 2460 + 22220
= 3 + 24680
= 24683