问题 解答题
口算:
2.8÷4×2.51.6+41+0.222-
4
7
+
3
7
3
5
-
3
7
72%÷0.01
7
8
-
7
8
×
1
7
3
7
÷
2
7
÷
15
14
0.5×
1
2
÷
1
2
×0.5
7
9
-
7
9
×
1
7
-
1
7
答案

2.8÷4×2.5=1.75,1.6+4=5.6,1+0.22=1.04,2-
4
7
+
3
7
=1
6
7
3
5
-
3
7
=
6
35
72%÷0.01=72,
7
8
-
7
8
×
1
7
=
3
4
3
7
÷
2
7
÷
15
14
=
7
5
0.5×
1
2
÷
1
2
×0.5=0.25,
7
9
-
7
9
×
1
7
-
1
7
=
11
21
故答案为:1.75,5.6,1.04,1
6
7
6
35
,72,
3
4
7
5
,0.25,
11
21

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