计算题:(1)0.5-(+334)+3.75-(+712)(2) (-7)×(-5)-90÷(-3)(3)(?8)×(?25)+(?8)×(+29)
计算题:(1)0.5-(+334)+3.75-(+712)(2)(-7)×(-5)-90÷(-3)(3)(?8)×(?25)+(?8)×(+29)?(?8)×35(4)(...
计算题:(1)0.5-(+334)+3.75-(+712)(2) (-7)×(-5)-90÷(-3)(3)(?8)×(?25)+(?8)×(+29)?(?8)×35(4)(?12)×(113?34+56)(5)3+60÷22×(-15)-1(6)(3-7)2-6÷(-2)×(-13)(7)(?3)3÷(?5)2×(?53)+|0.8?1|
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(1)0.5-(+3
)+3.75-(+7
)
=0.5-3
+3.75-7
=-7;
(2)(-7)×(-5)-90÷(-3)=35+30=65;
(3)原式=-8×(?
+
?
)=-8×(-
)=
;
(4)原式=-12×
+12×
-12×
=-16+9-10=-17;
(5)原式=3+60÷4×(-
)-1=3-3-1=-1;
(5)原式=(-4)2-6×
×
=16-1=15;
(6)原式=27×
×
+0.2=
+0.2=2.
3 |
4 |
1 |
2 |
=0.5-3
3 |
4 |
1 |
2 |
=-7;
(2)(-7)×(-5)-90÷(-3)=35+30=65;
(3)原式=-8×(?
2 |
5 |
2 |
9 |
3 |
5 |
7 |
9 |
56 |
9 |
(4)原式=-12×
4 |
3 |
3 |
4 |
5 |
6 |
(5)原式=3+60÷4×(-
1 |
5 |
(5)原式=(-4)2-6×
1 |
2 |
1 |
3 |
(6)原式=27×
1 |
25 |
5 |
3 |
9 |
5 |
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