题目内容
计算下列各题:
(1)23-37+3-52;
(2)(1
+2
-3.75)×24;
(3)(-3)2-60÷(-2)2×
+1-21;
(4)-24×(-
)3÷(-2)2+(-22)÷(-
).
(1)23-37+3-52;
(2)(1
| 3 |
| 8 |
| 1 |
| 3 |
(3)(-3)2-60÷(-2)2×
| 1 |
| 10 |
(4)-24×(-
| 3 |
| 2 |
| 23 |
| 3 |
(1)原式=(23+3)+[(-37)+(-52)]=26+(-89)=-63;
(2)原式=
×24+
×24-
×24=33+56-90=-1;
(3)原式=9-60×
×
+2=9-
-20=-12.5;
(4)原式=-16×(-
)×
+(-4)×(-
)=
+
=15
(2)原式=
| 11 |
| 8 |
| 7 |
| 3 |
| 15 |
| 4 |
(3)原式=9-60×
| 1 |
| 4 |
| 1 |
| 10 |
| 3 |
| 2 |
(4)原式=-16×(-
| 27 |
| 8 |
| 1 |
| 4 |
| 3 |
| 8 |
| 27 |
| 2 |
| 3 |
| 2 |
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