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8.4÷0.7=
5
11
×33=
1
4
-
1
5
=
0.25×4= 3-
3
4
=
1
4
÷25%=
4.8×
5
8
=
3.37+6.63=
2
5
+
3
5
×2=
3
16
×
4
9
=
1-100%= 3.6×
4
9
=
0.5-
1
5
+0.5-
1
5
=
12.6÷3= 1.02-0.43=
3
7
=
10-1.34-3.66=
2
3
=
7+0÷7-7=
5
6
×13÷
5
6
=
分析:根据小数和分数加减乘除的计算方法进行计算即可.
解答:解:
8.4÷0.7=12,
5
11
×33=15,
1
4
-
1
5
=
1
20
0.25×4=1, 3-
3
4
=2
1
4
1
4
÷25%=1,
4.8×
5
8
=3,
3.37+6.63=10,
2
5
+
3
5
×2=
8
5
3
16
×
4
9
=
1
12
1-100%=0, 3.6×
4
9
=1.6,
0.5-
1
5
+0.5-
1
5
=
3
5
12.6÷3=4.2, 1.02-0.43=0.59,
3
7
=
7
3
10-1.34-3.66=5,
2
3
=12,
7+0÷7-7=0,
5
6
×13÷
5
6
=13.
点评:口算时,注意运算符号和数据,然后再进一步计算即可.
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