
算一算(1)-23+(+58)-(-5)(2)(12+56-712)÷(-136)(3)-14-16×[3-(-3)2](4)16-(3?8+4
算一算(1)-23+(+58)-(-5)(2)(12+56-712)÷(-136)(3)-14-16×[3-(-3)2](4)16-(3?8+4)...
算一算(1)-23+(+58)-(-5)(2)(12+56-712)÷(-136)(3)-14-16×[3-(-3)2](4)16-(3?8+4)
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(1)原式=-23+58+5
=35+5
=40;
(2)原式=
×(-36)+
×(-36)-
×(-36)
=-18-30+21
=-27;
(3)原式=-1-
×(3-9)
=-1-
×(-6)
=1-1
=0;
(4)原式=4-(-2+4)
=4-2
=2.
=35+5
=40;
(2)原式=
1 |
2 |
5 |
6 |
7 |
12 |
=-18-30+21
=-27;
(3)原式=-1-
1 |
6 |
=-1-
1 |
6 |
=1-1
=0;
(4)原式=4-(-2+4)
=4-2
=2.
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