问题 解答题
(1)66+8=(2)47-8=(3)25×4=(4)56÷4=(5)3.07÷3=
(6)471-299=(7)600÷5=(8)1.06×8=(9)6.6+4=(10)1-0.05=
(11)3.8+6.2=(12)3.8÷0.19=(13)0.1+0.1÷0.1(14)24×0.5=(15)1.8÷0.2=
(16)1÷0.25=(17)8-0.8=(18)1.5×0.6=(19)1.5÷0.3=(20)
2
9
×4=
(21)
4
9
×
3
8
=
(22)12÷
3
7
=
(23)
5
8
-
1
8
=
(24)1-
3
11
=
(25)
5
6
+
1
6
=
(26)
3
7
×
5
6
=
(27)
1
3
+
1
6
=
(28)
1
5
-
1
7
=
(29)
1
2
÷
3
4
=
(30)
2
9
+
2
3
=
答案

(1)66+8=74,(2)47-8=39,(3)25×4=100,(4)56÷4=14,(5)3.07÷3=
307
300
(6)471-299=172,(7)600÷5=120,(8)1.06×8=8.48,(9)6.6+4=10.6,(10)1-0.05=0.95,
(11)3.8+6.2=10,(12)3.8÷0.19=20,(13)0.1+0.1÷0.1=1.1,(14)24×0.5=12,(15)1.8÷0.2=9,
(16)1÷0.25=4,(17)8-0.8=7.2,(18)1.5×0.6=0.9,(19)1.5÷0.3=5,(20)
2
9
×4=
8
9
(21)
4
9
×
3
8
=
1
6
(22)12÷
3
7
=28,
(23)
5
8
-
1
8
=
1
2
(24)1-
3
11
=
8
11
(25)
5
6
+
1
6
=1,
(26)
3
7
×
5
6
=
5
14
(27)
1
3
+
1
6
=
1
2
(28)
1
5
-
1
7
=
2
35
(29)
1
2
÷
3
4
=
2
3
(30)
2
9
+
2
3
=
8
9

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