计算下面各题,能简算的必须简算14.8-6.46-3.5435÷6×107(79+56-14)×721823÷85+1823×381.25×6.9×813÷(14+56)×34.-数学

题目简介

计算下面各题,能简算的必须简算14.8-6.46-3.5435÷6×107(79+56-14)×721823÷85+1823×381.25×6.9×813÷(14+56)×34.-数学

题目详情

计算下面各题,能简算的必须简算
14.8-6.46-3.54
3
5
÷6×
10
7

7
9
+
5
6
-
1
4
)×72  
18
23
÷
8
5
+
18
23
×
3
8

1.25×6.9×8
13÷(
1
4
+
5
6
3
4
题型:解答题难度:中档来源:不详

答案

(1)14.8-6.46-3.54
=14.8-(6.46+3.54)
=14.8-10
=4.8;

(2)class="stub"3
5
÷6×class="stub"10
7

=class="stub"1
10
×class="stub"10
7

=class="stub"1
7


(3)(class="stub"7
9
+class="stub"5
6
-class="stub"1
4
)×72  
=class="stub"7
9
×72+class="stub"5
6
×72-class="stub"1
4
×72  
=56+60-18
=116-18
=98;

(4)class="stub"18
23
÷class="stub"8
5
+class="stub"18
23
×class="stub"3
8

=class="stub"18
23
×class="stub"5
8
+class="stub"18
23
×class="stub"3
8

=class="stub"18
23
×(class="stub"5
8
+class="stub"3
8

=class="stub"18
23
×1
=class="stub"18
23


(5)1.25×6.9×8
=1.25×8×6.9
=10×6.9
=69;

(6)13÷(class="stub"1
4
+class="stub"5
6
)×class="stub"3
4

=13÷class="stub"13
12
×class="stub"3
4

=12×class="stub"3
4

=9.

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