
计算(1)(-7)+(+15)-(-25)(2)(-3)×(-9)-(-5)(3)?24×(34?56+712)(4)1÷(-3)×(-1
计算(1)(-7)+(+15)-(-25)(2)(-3)×(-9)-(-5)(3)?24×(34?56+712)(4)1÷(-3)×(-13)(5)(?3)2?(?112...
计算(1)(-7)+(+15)-(-25)(2)(-3)×(-9)-(-5)(3)?24×(34?56+712)(4)1÷(-3)×(-13)(5)(?3)2?(?112)3×29?6÷(?23)2(6)(?3)2?[(?23)+(?14)]÷112.
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(1)原式-7+15+25=-7+40=-33;
(2)原式=27+5=32;
(3)原式=-18+20-14=-32+20=-12;
(4)原式=1×(-
)×(-
)=
;
(5)原式=9+
×
-6×
=9+
-
=9-
=-
;
(6)原式=9-(-
-
)×12=9+8+3=20.
(2)原式=27+5=32;
(3)原式=-18+20-14=-32+20=-12;
(4)原式=1×(-
1 |
3 |
1 |
3 |
1 |
9 |
(5)原式=9+
27 |
8 |
2 |
9 |
9 |
4 |
3 |
4 |
27 |
2 |
51 |
2 |
33 |
2 |
(6)原式=9-(-
2 |
3 |
1 |
4 |
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