题目内容
计算:
(1)|-10|+|+8|;
(2)(-24)-(-15);
(3)-3×(-4)×(-5);
(4)(-
)÷(-
);
(5)(-36)×(
-
+
);
(6)42×(-
)+(-
)÷(-
).
(1)|-10|+|+8|;
(2)(-24)-(-15);
(3)-3×(-4)×(-5);
(4)(-
| 7 |
| 8 |
| 3 |
| 4 |
(5)(-36)×(
| 2 |
| 9 |
| 1 |
| 4 |
| 1 |
| 18 |
(6)42×(-
| 2 |
| 3 |
| 3 |
| 4 |
| 1 |
| 4 |
(1)|-10|+|+8|
=10+8
=18;
(2)(-24)-(-15)=-9;
(3)-3×(-4)×(-5)
=12×(-5)
=-60;
(4)(-
)÷(-
)=
;
(5)(-36)×(
-
+
)
=-36×
+36×
-36×
=-8+9-2
=-1;
(6)42×(-
)+(-
)÷(-
)
=-28+3
=-25.
=10+8
=18;
(2)(-24)-(-15)=-9;
(3)-3×(-4)×(-5)
=12×(-5)
=-60;
(4)(-
| 7 |
| 8 |
| 3 |
| 4 |
| 7 |
| 6 |
(5)(-36)×(
| 2 |
| 9 |
| 1 |
| 4 |
| 1 |
| 18 |
=-36×
| 2 |
| 9 |
| 1 |
| 4 |
| 1 |
| 18 |
=-8+9-2
=-1;
(6)42×(-
| 2 |
| 3 |
| 3 |
| 4 |
| 1 |
| 4 |
=-28+3
=-25.
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