试题:
1
3
+
1
4
=______
5
8
÷5=______
1
3
+
1
2
-
1
3
+
1
2
=______
1.25×8=______
0.15×1.2+3.8×15%=______2-
7
10
÷
7
16
=______
0.25+0.75=______
2
3
+
2
3
×0=______
1
2
-
4
5
)×
1
3
=______
4505÷5=______24.3-8.87-0.13=______.

答案:

我来补答
(1)
1
3
+
1
4
=
7
12
,(2)
5
8
÷5=
1
8
,(3)
1
3
+
1
2
-
1
3
+
1
2
=1,(4)1.25×8=10,
(5)0.15×1.2+3.8×15%=0.75,(6)2-
7
10
÷
7
16
=
2
5
,(7)0.25+0.75=1,(8)
2
3
+
2
3
×0=
2
3

(9)(
1
2
-
4
5
)×
1
3
=-
1
10
,(10)4505÷5=901,(11)24.3-8.87-0.13=15.3.
故答案为:
7
12
1
8
,1,10,0.75,
2
5
,1,
2
3
,-
1
10
,901,15.3.
 
 
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