试题与答案

计算:①(-0.75)+(-112);②(-223)-(-312));③(213

题型:解答题

题目:

计算:
①(-0.75)+(-1
1
2
);
(-2
2
3
)-(-3
1
2
)
);
(2
1
3
-3
1
9
+1
4
45
)÷(-1
1
6
)

④-72+2×(-3)2-(-6)÷(-
1
3
);
1
1
2
×[3×(-
2
3
)-1]-8×[(-2)2-(3-4.5)]

答案:

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