58×223+213÷113=4.85×2+4.85÷197+4.85=(145+29×334)÷21930=547×3.5+0.729×29=40×393940=80×18÷1800×1800=-数

题目简介

58×223+213÷113=4.85×2+4.85÷197+4.85=(145+29×334)÷21930=547×3.5+0.729×29=40×393940=80×18÷1800×1800=-数

题目详情

5
8
×2
2
3
+2
1
3
÷1
1
3
=
4.85×2+4.85÷
1
97
+4.85=
(1
4
5
+
2
9
×3
3
4
)÷2
19
30
=
5
4
7
×3.5+0.729×
2
9
=
40×39
39
40
=
80×
1
8
÷
1
800
×
1
800
=
题型:解答题难度:中档来源:不详

答案

class="stub"5
8
×2class="stub"2
3
+2class="stub"1
3
÷1class="stub"1
3

=class="stub"5
3
+class="stub"7
4

=class="stub"41
12


②4.85×2+4.85÷class="stub"1
97
+4.85
=4.85×2+4.85×97+4.85×1,
=4.85×(2+97+1),
=4.85×100,
=485;

③(1class="stub"4
5
+class="stub"2
9
×3class="stub"3
4
)÷2class="stub"19
30

=(1class="stub"4
5
+class="stub"5
6
)÷2class="stub"19
30

=class="stub"79
30
×class="stub"30
79

=1;

④5class="stub"4
7
×3.5+0.729×class="stub"2
9

=19.5+0.162,
=19.662;

⑤40×39class="stub"39
40

=40×(39+class="stub"39
40
),
=40×39+40×class="stub"39
40

=40×39+39,
=1560+39,
=1599;
⑥80×class="stub"1
8
÷class="stub"1
800
×class="stub"1
800

=80×class="stub"1
8
×800×class="stub"1
800

=10.

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