问题 解答题
455×7
3
5
+111÷
5
96
+43.3×76
1
2
3
-[(3.62×
2
15
+6.38÷7
1
2
)×1.82-1
1
3
×0.82].
答案

(1)455×7

3
5
+111÷
5
96
+43.3×76,

=455×7.6+111×19.2+43.3×76,

=7.6×(455+433)+111×19.2,

=7.6×888+111×19.2,

=111×(60.8+19.2),

=111×80,

=8880;

(2)1

2
3
-[(3.62×
2
15
+6.38÷7
1
2
)×1.82-1
1
3
×0.82],

=1

2
3
-[
2
15
×
(3.62+6.82)×1.82-1
1
3
×0.82],

=1

2
3
-[1
1
3
×(1.82-0.82)],

=1

2
3
-1
1
3

=

1
3

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