直接寫出得數(shù).
3
4
÷6
=

5
6
×
3
5
=

71.83÷8≈

5.04×9.85≈
6
7
÷
7
6
=
1
2
×
1
2
÷
1
4
=
2
3
+
1
3
×4
=
0.53=
分析:①把除法改為乘法,約分計(jì)算;②約分計(jì)算;③把71.83看作72;④把5.04看作5,把9.85看作10;⑤把除法改為乘法,再計(jì)算;⑥從左往右依次計(jì)算;⑦先算乘法,再算加法;⑧此題即3個(gè)0.5相乘.
解答:解:
3
4
÷6=
1
8
;           
5
6
×
3
5
=
1
2
;                71.83÷8≈9;            5.04×9.85≈50; 
6
7
÷
7
6
=
36
49
;             
1
2
×
1
2
÷
1
4
=1;             
2
3
+
1
3
×4
=2;           0.53=0.125;
點(diǎn)評(píng):此題主要考查了分?jǐn)?shù)的乘除計(jì)算,以及估算方法、乘方計(jì)算,根據(jù)題目特點(diǎn),靈活解答.
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