题目内容
计算:
(1)(-13)×(-6);
(2)(+1
)×(-1
);
(3)(-3)÷
×2;
(4)(-3
)÷(-5
);
(5)(-
+
-
-
)×(-20);
(6)(-864
)÷(-72);
(7)(
-
+
-
)÷(-
);
(8)(-
)÷(-
-
+
-
);
(9)-120×(-3
)+(-7)×(-3
)+37×(-3
).
(1)(-13)×(-6);
(2)(+1
| 2 |
| 3 |
| 1 |
| 5 |
(3)(-3)÷
| 1 |
| 2 |
(4)(-3
| 2 |
| 3 |
| 1 |
| 2 |
(5)(-
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 5 |
(6)(-864
| 24 |
| 31 |
(7)(
| 1 |
| 3 |
| 5 |
| 21 |
| 3 |
| 14 |
| 2 |
| 7 |
| 1 |
| 42 |
(8)(-
| 1 |
| 30 |
| 2 |
| 3 |
| 1 |
| 10 |
| 1 |
| 6 |
| 2 |
| 5 |
(9)-120×(-3
| 8 |
| 9 |
| 8 |
| 9 |
| 8 |
| 9 |
(1)原式=78;
(2)原式=
×(-
)=-2;
(3)原式=-3×2×2=-12;
(4)原式=
÷
=
×
=
;
(5)原式=-
×(-20)+
×(-20)-
×(-20)-
×(-20)=10-
+5+4=19-
=
;
(6)原式=(-864-
)×(-
)=864×
+
×
=12+
=12
;
(7)原式=(-
-
+
-
)×(-42)=-
×(-42)-
×(-42)+
×(-42)-
×(-42)=14+10-9+12=36-9=25;
(8)原式=-
÷(-
-
+
-
)=-
÷(-1)=
;
(9)原式=(-120-7+37)×(-3
)=-90×(-3-
)=-90×(-3)-90×(-
)=270+80=350.
(2)原式=
| 5 |
| 3 |
| 6 |
| 5 |
(3)原式=-3×2×2=-12;
(4)原式=
| 11 |
| 3 |
| 11 |
| 2 |
| 11 |
| 3 |
| 2 |
| 11 |
| 2 |
| 3 |
(5)原式=-
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 5 |
| 20 |
| 3 |
| 20 |
| 3 |
| 37 |
| 3 |
(6)原式=(-864-
| 24 |
| 31 |
| 1 |
| 72 |
| 1 |
| 72 |
| 24 |
| 31 |
| 1 |
| 72 |
| 1 |
| 93 |
| 1 |
| 93 |
(7)原式=(-
| 1 |
| 3 |
| 5 |
| 21 |
| 3 |
| 14 |
| 2 |
| 7 |
| 1 |
| 3 |
| 5 |
| 21 |
| 3 |
| 14 |
| 2 |
| 7 |
(8)原式=-
| 1 |
| 30 |
| 20 |
| 30 |
| 3 |
| 30 |
| 5 |
| 30 |
| 12 |
| 30 |
| 1 |
| 30 |
| 1 |
| 30 |
(9)原式=(-120-7+37)×(-3
| 8 |
| 9 |
| 8 |
| 9 |
| 8 |
| 9 |
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