
计算题:(1)12+(?712)?(?18)?32.5;(2)(?35)÷13×3×(?
计算题:(1)12+(?712)?(?18)?32.5;(2)(?35)÷13×3×(?119);(3)(58?16+712)÷(?124);(4)(-1)3+[(-3)...
计算题:(1)12+(?712)?(?18)?32.5;(2)(?35)÷13×3×(?119);(3)(58?16+712)÷(?124);(4)(-1)3+[(-3)2+(3-22)×2].
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(1)原式=12?7
+18?32.5
=30-40
=-10;
(2)原式=(?
)×3×3×(?
)
=6;
(3)原式=(
?
+
)×(?24)
=-15+4-14
=-25;
(4)原式=-1+[9+(3-4)×2]
=-1+(9-2)
=-1+7
=6.
1 |
2 |
=30-40
=-10;
(2)原式=(?
3 |
5 |
10 |
9 |
=6;
(3)原式=(
5 |
8 |
1 |
6 |
7 |
12 |
=-15+4-14
=-25;
(4)原式=-1+[9+(3-4)×2]
=-1+(9-2)
=-1+7
=6.
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