选择最合理的方法进行计算992324×24435×79-335÷12712+1÷3.8×345+3.5(913-3.25)÷212+1.05213÷[(5115-335)×15][5-(9110-41

题目简介

选择最合理的方法进行计算992324×24435×79-335÷12712+1÷3.8×345+3.5(913-3.25)÷212+1.05213÷[(5115-335)×15][5-(9110-41

题目详情

选择最合理的方法进行计算
99
23
24
×24
4
3
5
×
7
9
-3
3
5
÷1
2
7
1
2
+1÷3.8×3
4
5
+3.5
(9
1
3
-3.25)÷2
1
2
+1.05
2
1
3
÷[(5
1
15
-3
3
5
)×15]
[5-(9
1
10
-4
1
5
)×
5
7
]÷1
1
2
题型:解答题难度:中档来源:不详

答案


(1)99class="stub"23
24
×24,
=(99+class="stub"23
24
)×24,
=99×24+class="stub"23
24
×24,
=2376+23,
=2399;

(2)4class="stub"3
5
×class="stub"7
9
-3class="stub"3
5
÷1class="stub"2
7

=4class="stub"3
5
×class="stub"7
9
-3class="stub"3
5
×class="stub"7
9

=(4class="stub"3
5
-3class="stub"3
5
)×class="stub"7
9

=1×class="stub"7
9

=class="stub"7
9


(3)class="stub"1
2
+1÷3.8×3class="stub"4
5
+3.5,
=class="stub"1
2
+class="stub"5
19
×3class="stub"4
5
+3.5,
=class="stub"1
2
+1+3.5,
=1.5+3.5,
=5;

(4)(9class="stub"1
3
-3.25)÷2class="stub"1
2
+1.05,
=6class="stub"1
12
÷2class="stub"1
2
+1.05,
=class="stub"73
30
+1.05,
=3class="stub"29
30


(5)2class="stub"1
3
÷[(5class="stub"1
15
-3class="stub"3
5
)×15],
=2class="stub"1
3
÷[1class="stub"7
15
×15],
=2class="stub"1
3
÷[1class="stub"7
15
×15],
=2class="stub"1
3
÷22,
=class="stub"7
66


(6)[5-(9class="stub"1
10
-4class="stub"1
5
)×class="stub"5
7
]÷1class="stub"1
2

=[5-4class="stub"9
10
×class="stub"5
7
]÷1class="stub"1
2

=[5-class="stub"7
2
]÷1class="stub"1
2

=class="stub"3
2
÷1class="stub"1
2

=1.

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