计算:(1)25.3+(-7.3)+(-13.7)+7.3(2)1?42÷5×(?15)(3)(23?112?415)×(?60)(4)(-12)÷(-
计算:(1)25.3+(-7.3)+(-13.7)+7.3(2)1?42÷5×(?15)(3)(23?112?415)×(?60)(4)(-12)÷(-3)+4÷(-22...
计算:(1)25.3+(-7.3)+(-13.7)+7.3(2)1?42÷5×(?15)(3)(23?112?415)×(?60)(4)(-12)÷(-3)+4÷(-22) (5)?14÷(?5)2×(?53)+|0.8?1|.
展开
1个回答
展开全部
(1)25.3+(-7.3)+(-13.7)+7.3
=(25.3+7.3)+[(-7.3)+(-13.7)]
=32.6+(-21)
=11.6;
(2)1-42÷5×(-
)
=1-16×
×(-
)
=1+
=
;
(3)(
-
-
)×(-60)
=
×(-60)-
×(-60)-
×(-60)
=-40+5+16
=-19;
(4)(-12)÷(-3)+4÷(-22)
=12÷3+4÷(-4)
=4-1
=3;
(5)?14÷(?5)2×(?
)+|0.8?1|
=-1÷25×(-
)+1-0.8
=-1×
×(-
)+0.2
=
+
=
.
=(25.3+7.3)+[(-7.3)+(-13.7)]
=32.6+(-21)
=11.6;
(2)1-42÷5×(-
1 |
5 |
=1-16×
1 |
5 |
1 |
5 |
=1+
16 |
25 |
=
41 |
25 |
(3)(
2 |
3 |
1 |
12 |
4 |
15 |
=
2 |
3 |
1 |
12 |
4 |
15 |
=-40+5+16
=-19;
(4)(-12)÷(-3)+4÷(-22)
=12÷3+4÷(-4)
=4-1
=3;
(5)?14÷(?5)2×(?
5 |
3 |
=-1÷25×(-
5 |
3 |
=-1×
1 |
25 |
5 |
3 |
=
1 |
15 |
1 |
5 |
=
4 |
15 |
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询