计算:(1)-13×(-3)+(-15)×5(2)(23-1112-1415)×(-60)(3)-134-(-18)+338+(-214)(4)-42÷(-12)÷(-1)7+(118+113-34)

题目简介

计算:(1)-13×(-3)+(-15)×5(2)(23-1112-1415)×(-60)(3)-134-(-18)+338+(-214)(4)-42÷(-12)÷(-1)7+(118+113-34)

题目详情

计算:
(1)-
1
3
×(-3)+(-
1
5
)×5

(2)(
2
3
-
11
12
-
14
15
)×(-60)

(3)-1
3
4
-(-
1
8
)+3
3
8
+(-2
1
4
)

(4)-42÷(-
1
2
)÷(-1)7+(1
1
8
+1
1
3
-
3
4
)×24
题型:解答题难度:中档来源:不详

答案

(1)-class="stub"1
3
×(-3)+(-class="stub"1
5
)×5

=1-1
=0;

(2)(class="stub"2
3
-class="stub"11
12
-class="stub"14
15
)×(-60)

=-class="stub"2
3
×60+class="stub"11
12
×60+class="stub"14
15
×60
=-40+55+56
=71;

(3)-1class="stub"3
4
-(-class="stub"1
8
)+3class="stub"3
8
+(-2class="stub"1
4
)

=(-1class="stub"3
4
-2class="stub"1
4
)+(class="stub"1
8
+3class="stub"3
8

=-4+3class="stub"1
2

=-class="stub"1
2


(4)-42÷(-class="stub"1
2
)÷(-1)7+(1class="stub"1
8
+1class="stub"1
3
-class="stub"3
4
)×24

=-16×2÷1+(27+32-18)
=-32+41
=9.

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