题目内容
计算:
(1)(-3)+6-(-1);
(2)(-
)×15÷(-3
);
(3)(-2)3-3×[(-4)2÷8-(3-5)]-22.
(1)(-3)+6-(-1);
(2)(-
| 7 |
| 5 |
| 1 |
| 2 |
(3)(-2)3-3×[(-4)2÷8-(3-5)]-22.
(1)(-3)+6-(-1)
=-3+6+1
=4;
(2)(-
)×15÷(-3
)
=-
×15×(-
)
=6;
(3)(-2)3-3×[(-4)2÷8-(3-5)]-22
=-8-3×[16÷8-(-2)]-4
=-8-3×[2+2]-4
=-8-3×4-4
=-24.
=-3+6+1
=4;
(2)(-
| 7 |
| 5 |
| 1 |
| 2 |
=-
| 7 |
| 5 |
| 2 |
| 7 |
=6;
(3)(-2)3-3×[(-4)2÷8-(3-5)]-22
=-8-3×[16÷8-(-2)]-4
=-8-3×[2+2]-4
=-8-3×4-4
=-24.
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