问题
解答题
用小数计算.
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答案
(1)8元6角+6元9分,
=8.63元+6.09元,
=14.72元.
(2)14米50厘米-9米4分米,
=14.50米-9.4米,
=5.1米.
(3)
-34 100
,56 1000
=0.34-0.056,
=0.284.
(4)
+5 100
,19 100
=0.05+0.19,
=0.24.
(5)
+7 10
-31 100
,1 10
=0.7+0.31-0.1,
=0.91.