递等式计算(能简算的要简算)4920÷24×20.425-13×127257+1.85+127+7.151.4+(58-0.25)÷1141.4×329-125×2293.3×[38+315÷(134

题目简介

递等式计算(能简算的要简算)4920÷24×20.425-13×127257+1.85+127+7.151.4+(58-0.25)÷1141.4×329-125×2293.3×[38+315÷(134

题目详情

递等式计算(能简算的要简算)
4920÷24×20.
4
2
5
-
1
3
×1
2
7

2
5
7
+1.85+1
2
7
+7.15
1.4+(
5
8
-0.25)÷1
1
4

1.4×3
2
9
-1
2
5
×2
2
9

3.3×[38+3
1
5
÷(1
3
4
-0.15)].
题型:解答题难度:中档来源:不详

答案

4920÷24×20
=205×20
=4100;
4class="stub"2
5
-class="stub"1
3
×1class="stub"2
7

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

=4class="stub"14
35
-class="stub"15
35

=3class="stub"34
35

2class="stub"5
7
+1.85+1class="stub"2
7
+7.15
=(2class="stub"5
7
+1class="stub"2
7
)+(1.85+7.15)
=4+9
=13;
1.4+(class="stub"5
8
-0.25)÷1class="stub"1
4

=1.4+0.375÷1.25
=1.4+0.3
=1.7;
1.4×3class="stub"2
9
-1class="stub"2
5
×2class="stub"2
9

=1.4×(3class="stub"2
9
-2class="stub"2
9

=1.4×1
=1.4;
3.3×[38+3class="stub"1
5
÷(1class="stub"3
4
÷0.15)]
=3.8×[38+class="stub"16
5
÷(class="stub"7
4
×class="stub"20
3
)]
=3.8×[38+class="stub"16
5
÷class="stub"35
3
]
=3.8×[38+class="stub"16
5
×class="stub"3
35
]
=3class="stub"4
5
×38class="stub"48
165

=class="stub"19
5
×class="stub"6318
165

=class="stub"120042
825

=145class="stub"417
825

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