题目内容
计算:
(1)-3+10-7-10
(2)-1÷(-
)×(-
)2.
(3)
+3×
(4)360÷4-(-2)2×[2-(-3)].
(1)-3+10-7-10
(2)-1÷(-
3 |
4 |
1 |
2 |
(3)
0.49 |
3 | -64 |
(4)360÷4-(-2)2×[2-(-3)].
(1)原式=-20+10=-10;
(2)原式=-1×(-
)×
=
;
(3)原式=0.7+3×(-4)=0.7-12=-11.3;
(4)原式=90-4×5=90-20=70.
(2)原式=-1×(-
4 |
3 |
1 |
4 |
1 |
3 |
(3)原式=0.7+3×(-4)=0.7-12=-11.3;
(4)原式=90-4×5=90-20=70.
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