题目内容
计算:
(1)(+
)+(-2
)+(+0.125)+(-12
)+(-4
)
(2)-3.5÷
×(
)
(3)-5×(-
)+13×(-
)-3÷(-
)
(4)-24×(-
+
-
)
(5)(-1)2008+(-5)×[(-2)3+2]-(-4)2÷(-
)
(6)-19
×3(用简便计算)
(1)(+
| 3 |
| 4 |
| 3 |
| 4 |
| 5 |
| 7 |
| 1 |
| 8 |
(2)-3.5÷
| 7 |
| 8 |
| 8 |
| 7 |
(3)-5×(-
| 1 |
| 5 |
| 11 |
| 5 |
| 5 |
| 11 |
(4)-24×(-
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 3 |
(5)(-1)2008+(-5)×[(-2)3+2]-(-4)2÷(-
| 1 |
| 2 |
(6)-19
| 8 |
| 9 |
(1)原式=
-2
+
-12
-4
=-2+
-4
-12
=-2-4-12
=-18
;
(2)原式=-
×
×
=-
;
(3)原式=1-13×
-3×
=1-
-
=1-
=-
;
(4)原式=24×
-24×
+24×
=12-18+8=2;
(5)原式=1-5(-8+2)+16×2=1-5×(-6)+32=1+30+32=63;
(5)原式=(
-20)×3=
×3-60=
-60=-59
.
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| 8 |
| 5 |
| 7 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 5 |
| 7 |
| 5 |
| 7 |
| 5 |
| 7 |
(2)原式=-
| 7 |
| 2 |
| 8 |
| 7 |
| 8 |
| 7 |
| 32 |
| 7 |
(3)原式=1-13×
| 11 |
| 5 |
| 11 |
| 5 |
| 143 |
| 5 |
| 33 |
| 5 |
| 176 |
| 5 |
| 171 |
| 5 |
(4)原式=24×
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 3 |
(5)原式=1-5(-8+2)+16×2=1-5×(-6)+32=1+30+32=63;
(5)原式=(
| 1 |
| 9 |
| 1 |
| 9 |
| 1 |
| 3 |
| 2 |
| 3 |
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