题目内容
细心算一算
(1)11+(-22)-3×(-11);
(2)(-1
)×(-
)÷(2
);
(3)(-2
)+(+
)+(-0.5)+(+
);
(4)(-5)×(-7)-5×(-6);
(5)-22×(-
)+8÷(-2)2;
(6)-|5|+(-3)3÷(-22);
(7)(
+
-
)×24;
(8)[(-3)2-(-5)2]÷(-2).
(1)11+(-22)-3×(-11);
(2)(-1
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 4 |
(3)(-2
| 1 |
| 2 |
| 5 |
| 6 |
| 1 |
| 6 |
(4)(-5)×(-7)-5×(-6);
(5)-22×(-
| 1 |
| 2 |
(6)-|5|+(-3)3÷(-22);
(7)(
| 5 |
| 12 |
| 2 |
| 3 |
| 3 |
| 4 |
(8)[(-3)2-(-5)2]÷(-2).
(1)原式=11-22+33=-11+33=22;
(2)原式=-
×
×
=-
;
(3)原式=-2
+
-
+
=-2
-
+
+
=-3+1=-2;
(4)原式=35+30=65;
(5)原式=4×
+8÷4=2+2=4;
(6)原式=-5-27÷4=-5-
=-
;
(7)原式=
×24+
×24-
×24=10+16-18=-2;
(8)原式=(9-25)÷(-2)=-16÷(-2)=8.
(2)原式=-
| 3 |
| 2 |
| 3 |
| 4 |
| 4 |
| 9 |
| 1 |
| 2 |
(3)原式=-2
| 1 |
| 2 |
| 5 |
| 6 |
| 1 |
| 2 |
| 1 |
| 6 |
| 1 |
| 2 |
| 1 |
| 2 |
| 5 |
| 6 |
| 1 |
| 6 |
(4)原式=35+30=65;
(5)原式=4×
| 1 |
| 2 |
(6)原式=-5-27÷4=-5-
| 27 |
| 4 |
| 47 |
| 4 |
(7)原式=
| 5 |
| 12 |
| 2 |
| 3 |
| 3 |
| 4 |
(8)原式=(9-25)÷(-2)=-16÷(-2)=8.
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