用递等式计算(1)1379+450÷18×40(2)(3.2÷16+10.8)÷22(3)511×725+725×611(4)14×17÷(56-34)-数学

题目简介

用递等式计算(1)1379+450÷18×40(2)(3.2÷16+10.8)÷22(3)511×725+725×611(4)14×17÷(56-34)-数学

题目详情

用递等式计算
(1)1379+450÷18×40
(2)(3.2÷16+10.8)÷22
(3)
5
11
×
7
25
+
7
25
×
6
11

(4)
1
4
×
1
7
÷(
5
6
-
3
4
题型:解答题难度:中档来源:不详

答案

(1)1379+450÷18×40,
=1379+25×40,
=1379+1000,
=2379;

(2)(3.2÷16+10.8)÷22,
=(0.2+10.8)÷22,
=11÷22,
=0.5;

(3)class="stub"5
11
×class="stub"7
25
+class="stub"7
25
×class="stub"6
11

=(class="stub"5
11
+class="stub"6
11
)×class="stub"7
25

=1×class="stub"7
25

=class="stub"7
25


(4)class="stub"1
4
×class="stub"1
7
÷( class="stub"5
6
-class="stub"3
4
),
=class="stub"1
4
×class="stub"1
7
÷class="stub"1
12

=class="stub"1
4
×class="stub"1
7
×12,
=class="stub"1
4
×12×class="stub"1
7

=3×class="stub"1
7

=class="stub"3
7

更多内容推荐