计算题:(1)-20+(-14)-(-18)-13(2)?14?16×[3?(?3)2](3)(?34?59+712)÷136(4)|?79|÷(23?15)
计算题:(1)-20+(-14)-(-18)-13(2)?14?16×[3?(?3)2](3)(?34?59+712)÷136(4)|?79|÷(23?15)?13×(?...
计算题:(1)-20+(-14)-(-18)-13(2)?14?16×[3?(?3)2](3)(?34?59+712)÷136(4)|?79|÷(23?15)?13×(?4)2
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(1)-20+(-14)-(-18)-13
=-20-14+18-13
=-20-14-13+18
=-29;
(2)?14?
×[3?(?3)2]
=-1-
×(-6)
=-1+1
=0;
(3)(?
?
+
)÷
=?
×36-
×36+
×36
=-27-20+21
=-26;
(4)|?
|÷(
?
)?
×(?4)2
=
×
-
×16
=
?
=-
.
=-20-14+18-13
=-20-14-13+18
=-29;
(2)?14?
1 |
6 |
=-1-
1 |
6 |
=-1+1
=0;
(3)(?
3 |
4 |
5 |
9 |
7 |
12 |
1 |
36 |
=?
3 |
4 |
5 |
9 |
7 |
12 |
=-27-20+21
=-26;
(4)|?
7 |
9 |
2 |
3 |
1 |
5 |
1 |
3 |
=
7 |
9 |
15 |
7 |
1 |
3 |
=
5 |
3 |
16 |
3 |
=-
11 |
3 |
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