试题:
直接写出得数.
①748-298=
②4.6+5.4=③3.2×2.5=④4200÷60=
6
7
÷18=
1
6
+
1
7
=
⑦1-
1
4
-
3
4
=
⑧5÷5÷
1
5
=

答案:

我来补答
①748-298=450,②4.6+5.4=10,③3.2×2.5=8,④4200÷60=70,
6
7
÷18=
1
21
1
6
+
1
7
=
13
42
⑦1-
1
4
-
3
4
=0,
⑧5÷5÷
1
5
=5.
故答案为:450,10,8,70,
1
21
13
42
,0,5.
 
 
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剩余:2000
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