题目内容

2.5-
1
5
=
1
3
+0.25=		 0.25×99+0.25= 24×(
5
12
+
3
8
)=		 4
3
7
-(3.75-1
4
7
)=
5
6
×(
5
8
-0.625)=
14
9
×
3
7
÷
10
9
=
1
4
×8÷
1
4
×8=		 100÷
1
4
×4-100=		 8×3.2+8×6.8=
分析：根据分数的四则混合运算和小数的四则混合运算进行计算即可得到答案．
解答：
解：2.5-
1
5
=2.3
1
3
+0.25=
7
12
 0.25×99+0.25=25 24×(
5
12
+
3
8
)=19		 4
3
7
-(3.75-1
4
7
)=2.25
5
6
×(
5
8
-0.625)=0
14
9
×
3
7
÷
10
9
=
3
5
1
4
×8÷
1
4
×8=64		 100÷
1
4
×4-100=1500		 8×3.2+8×6.8=80
点评：此题主要考查的是分数四则混合运算和小数四则混合运算的计算方法．
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相关题目
直接写得数
049+0149=		 1.01-0.1= 30+0.15= 13+0.13= 12.6.2-3.8=
5.4-2.5-1.4= 2.14-0.9= 7+0.25= 0.99+1.8= 5.6+1.01=
7.5+2.54= 4-0.25=
直接写出得数：
7+
1
4
+
3
4
=
5
6
-
1
2
=
2
3
+
2
3
=
1
2
-
1
5
=		 12-
1
2
-
1
2
=
9-
1
6
+
1
6
=
4
5
-
1
2
=		 6.3×0.5=
5
9
+
1
3
=		 0.37÷0.37=
2.5-
1
5
=
1
3
+0.25=		 0.25×99+0.25= 24×(
5
12
+
3
8
)=		 4
3
7
-(3.75-1
4
7
)=
5
6
×(
5
8
-0.625)=
14
9
×
3
7
÷
10
9
=
1
4
×8÷
1
4
×8=		 100÷
1
4
×4-100=		 8×3.2+8×6.8=
2.5-
1
5
=
1
3
+0.25=		 0.25×99+0.25= 24×(
5
12
+
3
8
)=		 4
3
7
-(3.75-1
4
7
)=
5
6
×(
5
8
-0.625)=
14
9
×
3
7
÷
10
9
=
1
4
×8÷
1
4
×8=		 100÷
1
4
×4-100=		 8×3.2+8×6.8=

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