计算:(1)-12+13-(9-18)(2)515-[216+(-4.8)-(-456)](3)5+3×(-2)3+33(4)30÷(15-16)-数学

题目简介

计算:(1)-12+13-(9-18)(2)515-[216+(-4.8)-(-456)](3)5+3×(-2)3+33(4)30÷(15-16)-数学

题目详情

计算:
(1)-12+13-(9-18)
(2)5
1
5
-[2
1
6
+(-4.8)-(-4
5
6
)
]
(3)5+3×(-2)3+33
(4)30÷(
1
5
-
1
6
题型:解答题难度:中档来源:不详

答案

(1)-12+13-(9-18)
=-12+13-(-9)
=-12+13+9
=-12+22
=10;

(2)5class="stub"1
5
-[2class="stub"1
6
+(-4.8)-(-4class="stub"5
6
)]
=5class="stub"1
5
-(2class="stub"1
6
-4.8+4class="stub"5
6

=5class="stub"1
5
-7+4.8
=10-7
=3;

(3)5+3×(-2)3+33
=5+3×(-8)+27
=5-24+27
=32-24
=8;

(4)30÷(class="stub"1
5
-class="stub"1
6

=30÷class="stub"1
30

=30×30
=900.

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