计算,能简算的就简算: 0.888*125*73+999*73 0.8+63*45+36*80% (19+...
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发布时间：2024-10-01 15:06
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时间：2024-10-03 10:26
0.888*125*73 + 999*73
=0.888*（1000/8）* 73 + 999*73
=888/8 * 73 + 999*73
=111*73+999*73
=110*73+1000*73
=110000*73=
=803 0000
=0.111*8*125*73+111*9
=0.111*1000*73+111*9
=111*73+111*9
=111*82
=100*82+10*82+83
=8200+820+82
=9102
0.888*125*73+999*3 =111*8*0.125*73+111*9*3 =111*76+111*27 =111*（73+27） =11100
999.9*0.28—0.6666*370……0.888*125*73+999*3简便计算 999.9*0.28—0.6666*370
=333.3*0.84-333.3*0.74
=333.3*（0.84-0.74）
=333.3*0.1
=33.33
0.888*125*73+999*3
=111*73+111*27
=111*（73+27）
=111*100
=11100
0.8+63*45+36*0.8的简单算法就是分拆合并数值进行计算
0.8+63*45+36*0.8=0.8*（1+36）+9*7*9*5=0.8*37+81*35
=0.8*（30+7）+（80+1）*（30+5）
=24+5.6+2400+30+400+5
=2864.6
脱式计算能简算的要简算73×15-33×13
脱式计算能简算的要简算
73×15-33×13
=(40+33)×15-33×13
=40×15+33×15-33×13
=600+33×(15-13)
=600+33×2
=600+66
=666
37.8×19-9×37.8
=37.8×（19-9）
=37.8×10
=378
8.3×3.6+83×0.01+0.83×63
=8.3x3.6+8.3x0.1+8.3x6.3
=8.3x（3.6+0.1+6.3）
=8.3x10
=83
999 - 356 ＝ 1000－357 ＝ 643 (1)
= (900-300) + (99-56)
= 643 (2)
