计算:(1)(-12)÷4×(-6)÷2;(2)(?58)×(?4)2?0.25×(?5)×(?4)3;(3)(?112)?114+(?212)?(?33
计算:(1)(-12)÷4×(-6)÷2;(2)(?58)×(?4)2?0.25×(?5)×(?4)3;(3)(?112)?114+(?212)?(?334)?(?114...
计算:(1)(-12)÷4×(-6)÷2;(2)(?58)×(?4)2?0.25×(?5)×(?4)3;(3)(?112)?114+(?212)?(?334)?(?114);(4)(?3)2÷214×(?23)2+4?22×(?13);(5)|45+23×(?12)÷6?(?3)2|+|24+(?3)2|×(?5);(6)1+3+5+…+99-(2+4+6+…+98).
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(1)原式=(-12)×
×(-6)×
=(-3)×(-6)×
=18×
=9;
(2)原式=(-
)×16-
×(-5)×(-4)2×(-4)
=-10-80
=-90;
(3)原式=?
?
?
+
+
=(-
-
)-(
-
?
)
=-4+
=?
;
(4)原式=9×
×
+4-4×(-
)
=
+4+
=
+4
=
;
(5)原式=|
+
×(?12)×
?9|+|24+9|×(?5)
=|
?
-9|+|33|×(-5)
=|?9
1 |
4 |
1 |
2 |
=(-3)×(-6)×
1 |
2 |
=18×
1 |
2 |
=9;
(2)原式=(-
5 |
8 |
1 |
4 |
=-10-80
=-90;
(3)原式=?
3 |
2 |
5 |
4 |
5 |
2 |
15 |
4 |
5 |
4 |
=(-
3 |
2 |
5 |
2 |
5 |
4 |
15 |
4 |
5 |
4 |
=-4+
15 |
4 |
=?
1 |
4 |
(4)原式=9×
4 |
9 |
4 |
9 |
1 |
3 |
=
16 |
9 |
4 |
3 |
=
16+12 |
9 |
=
64 |
9 |
(5)原式=|
4 |
5 |
2 |
3 |
1 |
6 |
=|
4 |
5 |
4 |
3 |
=|?9