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27+0.73=
27.73
27.73
2.35-2.3=
0.05
0.05
0.15×4=
0.6
0.6
0.2×7.8×0.5=
0.78
0.78
6×0.4=
2.4
2.4
0.125×8=
1
1
7.2÷0.9=
8
8
9.3÷0.03=
310
310
0÷2.1×6.5=
0
0
1÷0.2÷0.5=
10
10
130×5=
650
650
280÷0.7=
400
400
分析:本題根據小數加減乘除的運算法則直接求解.
解答:解:
27+0.73=27.73 2.35-2.3=0.05 0.15×4=0.6
0.2×7.8×0.5=0.78 6×0.4=2.4 0.125×8=1
7.2÷0.9=8 9.3÷0.03=310 0÷2.1×6.5=0
1÷0.2÷0.5=10 130×5=650 280÷0.7=400
點評:直接寫得數的題目主要是考察細心的程度,要注意小數點的位置.
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