zhyby - 2013/1/23 15:56:00
数字修约的规则ÙÈ4bbs.3c3t.com=M9C×"l
1、ÙÈ4bbs.3c3t.com=M9C×"l
修约间隔:指确定修约保留位数的一种方式,修约间隔一旦确定后,修约值即为该值的整倍数。ÙÈ4bbs.3c3t.com=M9C×"l
2、ÙÈ4bbs.3c3t.com=M9C×"l
数字修约的进舍规则ÙÈ4bbs.3c3t.com=M9C×"l
(1)拟舍弃数字最左一位数小于5时,则舍去,即4舍5入。ÙÈ4bbs.3c3t.com=M9C×"l
例如:13.2476(0.1)→13.2ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
13.2476(0.01)→13.25ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
13.2476(1)→13ÙÈ4bbs.3c3t.com=M9C×"l
(2)拟舍弃数字最左一位数≥5时,而且后面的数字并非全部为0时,则进1,(保留末位数加1)ÙÈ4bbs.3c3t.com=M9C×"l
例如:1167(100)→1200ÙÈ4bbs.3c3t.com=M9C×"l
12*102ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
1167(10)→1170ÙÈ4bbs.3c3t.com=M9C×"l
117*10ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
10.502(1)→11ÙÈ4bbs.3c3t.com=M9C×"l
(3)似舍弃数字最左一位数为5,而后面无数字或全部为0时,若所保留的末位数为奇数(1、3、5、7、9)则进一,为偶数(2、4、6、8、0)则舍弃,即奇进偶不进。ÙÈ4bbs.3c3t.com=M9C×"l
例如:2.050(0.1)→2.0ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
0.150(0.1)→0.2ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
1350(100)→1400ÙÈ4bbs.3c3t.com=M9C×"l
14*102ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
0.0345(保留2位有效)0.034ÙÈ4bbs.3c3t.com=M9C×"l
(4)负数修约同前ÙÈ4bbs.3c3t.com=M9C×"l
(5)0.5单位修约时,将拟修约数乘以2,按指定数位依进舍规则修约,所得数值再除以2。ÙÈ4bbs.3c3t.com=M9C×"l
AÙÈ4bbs.3c3t.com=M9C×"l
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2AÙÈ4bbs.3c3t.com=M9C×"l
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24(1)ÙÈ4bbs.3c3t.com=M9C×"l
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A的修约值ÙÈ4bbs.3c3t.com=M9C×"l
50.25ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
100.5ÙÈ4bbs.3c3t.com=M9C×"l
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ÙÈ4bbs.3c3t.com=M9C×"l
100ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
50.0(0.5)ÙÈ4bbs.3c3t.com=M9C×"l
50.38ÙÈ4bbs.3c3t.com=M9C×"l
100.76ÙÈ4bbs.3c3t.com=M9C×"l
101ÙÈ4bbs.3c3t.com=M9C×"l
50.5ÙÈ4bbs.3c3t.com=M9C×"l
(6)0.2单位修约时,先乘5,再除以5。同上。方法:小数间隔,先乘后除。ÙÈ4bbs.3c3t.com=M9C×"l
例如:将下列数修约到百位数0.2个单位(修约间隔20)ÙÈ4bbs.3c3t.com=M9C×"l
AÙÈ4bbs.3c3t.com=M9C×"l
5AÙÈ4bbs.3c3t.com=M9C×"l
5A的修约值(100) ÙÈ4bbs.3c3t.com=M9C×"l
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ÙÈ4bbs.3c3t.com=M9C×"l
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A的修约值(20)ÙÈ4bbs.3c3t.com=M9C×"l
830ÙÈ4bbs.3c3t.com=M9C×"l
4150ÙÈ4bbs.3c3t.com=M9C×"l
4200ÙÈ4bbs.3c3t.com=M9C×"l
840ÙÈ4bbs.3c3t.com=M9C×"l
842ÙÈ4bbs.3c3t.com=M9C×"l
4210ÙÈ4bbs.3c3t.com=M9C×"l
4200ÙÈ4bbs.3c3t.com=M9C×"l
840ÙÈ4bbs.3c3t.com=M9C×"l
又例:将下列数修约到个位数的5个单位。方法:整数间隔,先除后乘(钢筋就是这样修约)ÙÈ4bbs.3c3t.com=M9C×"l
AÙÈ4bbs.3c3t.com=M9C×"l
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A/5ÙÈ4bbs.3c3t.com=M9C×"l
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A/5(1)ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
A(5)ÙÈ4bbs.3c3t.com=M9C×"l
442.5ÙÈ4bbs.3c3t.com=M9C×"l
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88.5ÙÈ4bbs.3c3t.com=M9C×"l
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88ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
440ÙÈ4bbs.3c3t.com=M9C×"l
442.52ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
88.504ÙÈ4bbs.3c3t.com=M9C×"l
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89ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
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445ÙÈ4bbs.3c3t.com=M9C×"l
541.9ÙÈ4bbs.3c3t.com=M9C×"l
108.38ÙÈ4bbs.3c3t.com=M9C×"l
ÙÈ4bbs.3c3t.com=M9C×"l
108ÙÈ4bbs.3c3t.com=M9C×"l
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540ÙÈ4bbs.3c3t.com=M9C×"l
243.5ÙÈ4bbs.3c3t.com=M9C×"l
48.72ÙÈ4bbs.3c3t.com=M9C×"l
49ÙÈ4bbs.3c3t.com=M9C×"l
245ÙÈ4bbs.3c3t.com=M9C×"l
347.5ÙÈ4bbs.3c3t.com=M9C×"l
69.50ÙÈ4bbs.3c3t.com=M9C×"l
70ÙÈ4bbs.3c3t.com=M9C×"l
350ÙÈ4bbs.3c3t.com=M9C×"l
zhyby - 2013/1/23 16:00:00
一些例子编排变形了,,应该是A,2A,2A(1),A的修约值。。其它类推,看得懂的就看吧,大致意思还是清楚ÙÈ4bbs.3c3t.com=M9C×"l
jutte - 2013/3/4 15:49:00
数据计算法则依据标准是哪个ÙÈ4bbs.3c3t.com=M9C×"l
dutuntun - 2013/3/24 9:06:00
进来看看ÙÈ4bbs.3c3t.com=M9C×"l
zhyby - 2013/3/24 9:33:00
依据标准是GB/T 8170—2008ÙÈ4bbs.3c3t.com=M9C×"l