问题 解答题
口算
5×0.9=
0.42÷7=0.4÷8=3.9×0=
86÷0.1=30×0.05=20+12.3=54÷0.9=
6.3÷0.7=9.54+0.46=10-0.1=1.5-0.01=
0.8×6=3.8×0.5=45÷0.45=1.3+0.7=
1
5
+
2
5
=
1
9
+
5
9
=
1-
3
26
=
1
3
-
1
4
=
答案

5×0.9=4.50.42÷7=0.060.4÷8=0.053.9×0=0
86÷0.1=86030×0.05=1.520+12.3=32.354÷0.9=60
6.3÷0.7=99.54+0.46=1010-0.1=9.91.5-0.01=1.49
0.8×6=4.83.8×0.5=1.945÷0.45=1001.3+0.7=2
1
5
+
2
5
=
3
5
1
9
+
5
9
=
2
3
1-
3
26
=
23
26
1
3
-
1
4
=
1
12

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