
计算:(1)18?6÷(?2)×(?13).(2)23?18?(?13)+(?38)(3)(12?59+56?712)×(-36)(4)?14÷(?5)2×(
计算:(1)18?6÷(?2)×(?13).(2)23?18?(?13)+(?38)(3)(12?59+56?712)×(-36)(4)?14÷(?5)2×(?53)+|...
计算:(1)18?6÷(?2)×(?13).(2)23?18?(?13)+(?38)(3)(12?59+56?712)×(-36)(4)?14÷(?5)2×(?53)+|0.8?1|.
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(1)18?6÷(?2)×(?
)
=18-3×
=18-1
=17;
(2)
?
?(?
)+(?
)
=(
+
)-(
+
)
=1-
=
;
(3)(
?
+
?
)×(-36)
=
×(-36)-
×(-36)+
×(-36)-
×(-36)
=-18+20-30+21
=-7;
(4)?14÷(?5)2×(?
)+|0.8?1|
=-1÷25×(-
)+
=
+
=
.
1 |
3 |
=18-3×
1 |
3 |
=18-1
=17;
(2)
2 |
3 |
1 |
8 |
1 |
3 |
3 |
8 |
=(
2 |
3 |
1 |
3 |
1 |
8 |
3 |
8 |
=1-
1 |
2 |
=
1 |
2 |
(3)(
1 |
2 |
5 |
9 |
5 |
6 |
7 |
12 |
=
1 |
2 |
5 |
9 |
5 |
6 |
7 |
12 |
=-18+20-30+21
=-7;
(4)?14÷(?5)2×(?
5 |
3 |
=-1÷25×(-
5 |
3 |
1 |
5 |
=
1 |
15 |
1 |
5 |
=
4 |
15 |
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