A.270
B.275.4
C.275
D.275.0
[问答题] 按有效数字运算规则计算:0.816×0.65-0.314
[问答题] 按有效数字运算规则计算:8.745+2.31-3.561
[问答题] 按有效数字运算规则计算:8.758+3.65×2.4
[问答题] 按有效数字运算规则计算(10.896-8.64)÷1.13
[问答题] 按有效数字运算规则计算: (2.56+3.874)×1.5
[问答题] 按有效数字运算规则计算:6.969÷2.30+5.362
[问答题] 按有效数字运算规则计算:8.762+1.2542×2.51
[问答题] 按有效数字运算规则计算(6.38+2.322)×0.45
[单选题]按有效数字运算规则,32.8×0.32/25.00的计算结果为()A .0.42B .0.420C .0.4198D .0.41984
[单选题]按有效数字运算规则计算,0.0121g+25.64g+1.0578g=?()。A .26.7099B .26.710C .26.71D .26.7