能简算的要简算.13÷49+13+14125×(56+34)+4578×379215÷(34+215)-数学

题目简介

能简算的要简算.13÷49+13+14125×(56+34)+4578×379215÷(34+215)-数学

题目详情

能简算的要简算.
1
3
÷
4
9
+
1
3
+
1
4
12
5
×(
5
6
+
3
4
)+
4
5
78×
3
79
2
15
÷(
3
4
+
2
15
题型:解答题难度:中档来源:不详

答案

class="stub"1
3
÷class="stub"4
9
+class="stub"1
3
+class="stub"1
4

=class="stub"1
3
×class="stub"9
4
+class="stub"1
3
+class="stub"1
4

=class="stub"3
4
+class="stub"1
4
+class="stub"1
3

=1+class="stub"1
3

=1class="stub"1
3

class="stub"12
5
×(class="stub"5
6
+class="stub"3
4
)+class="stub"4
5

=class="stub"12
5
×class="stub"5
6
+class="stub"12
5
×class="stub"3
4
+class="stub"4
5

=2+class="stub"9
5
+class="stub"4
5

=2+(class="stub"9
5
+class="stub"4
5

=2+class="stub"13
5

=2+2class="stub"3
5

=4class="stub"3
5

③78×class="stub"3
79

=(79-1)×class="stub"3
79

=79×class="stub"3
79
-1×class="stub"3
79

=3-class="stub"3
79

=2class="stub"76
79

class="stub"2
15
÷(class="stub"3
4
+class="stub"2
15

=class="stub"2
15
÷(class="stub"45
60
+class="stub"8
60

=class="stub"2
15
÷class="stub"53
60

=class="stub"2
15
×class="stub"60
53

=class="stub"8
53

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