题目内容
计算:
(1)(2
)×(﹣
)×(﹣3
);
(2)(﹣5
)×(+1
)×(﹣2
);
(3)(﹣0.1)×(﹣0.001)×(﹣100)×(﹣1000);
(4)(6
﹣8
)×1
;
(5)2÷(﹣
)×
÷(﹣5
);
(6)﹣1+5÷(﹣
)×(﹣6).
(1)(2
(2)(﹣5
(3)(﹣0.1)×(﹣0.001)×(﹣100)×(﹣1000);
(4)(6
(5)2÷(﹣
(6)﹣1+5÷(﹣
解:(1)(2
)×(﹣
)(﹣3
)
=
=
;
(2)(﹣5
)×(+1
)×(﹣2
)
=
=22;
(3)(﹣0.1)×(﹣0.001)×(﹣100)×(﹣1000)
=0.1×100×0.001×1000
=10;
(4)(6
﹣8
)×1
=
=
=﹣
;
(5)2÷(﹣
)×
÷(﹣5
)
=2×
=
;
(6)﹣1+5÷(﹣
)×(﹣6)
=﹣1+5×6×6
=﹣1+180
=﹣179.
=
=
(2)(﹣5
=
=22;
(3)(﹣0.1)×(﹣0.001)×(﹣100)×(﹣1000)
=0.1×100×0.001×1000
=10;
(4)(6
=
=
=﹣
(5)2÷(﹣
=2×
=
(6)﹣1+5÷(﹣
=﹣1+5×6×6
=﹣1+180
=﹣179.
练习册系列答案
相关题目