用递等式计算(1-0.05)÷1.9+0.1429×[1-(34-38)](45+14)÷73+710375+450÷18×25.-数学

题目简介

用递等式计算(1-0.05)÷1.9+0.1429×[1-(34-38)](45+14)÷73+710375+450÷18×25.-数学

题目详情

用递等式计算
(1-0.05)÷1.9+0.1
4
29
×[1-(
3
4
-
3
8
)]
4
5
+
1
4
)÷
7
3
+
7
10

375+450÷18×25.
题型:解答题难度:中档来源:不详

答案

(1)(1-0.05)÷1.9+0.1,
=0.95÷1.9+0.1,
=0.5+0.1,
=0.6;

(2)class="stub"4
29
×[1-(class="stub"3
4
-class="stub"3
8
)],
=class="stub"4
29
×[1-class="stub"3
8
],
=class="stub"4
29
×class="stub"5
8

=class="stub"5
58


(3)(class="stub"4
5
+class="stub"1
4
)÷class="stub"7
3
+class="stub"7
10

=class="stub"21
20
÷class="stub"7
3
+class="stub"7
10

=class="stub"9
20
+class="stub"7
10

=class="stub"23
20


(4)375+450÷18×25,
=375+25×25,
=375+625,
=1000.

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