问题
解答题
计算下列各式: (1)-1-2+4 (2)|+3|+
(3)(-3)÷
(4)7
|
答案
(1)原式=-3+4
=1;
(2)原式=3-1+4
=6;
(3)原式=-3×2+
×(-12)1 6
=-6-2
=-8;
(4)原式=
×(-64 9
)×(1-1+3+9 4
-1 2
+1 8
)1 4
=-16×5 8
=-10.
计算下列各式: (1)-1-2+4 (2)|+3|+
(3)(-3)÷
(4)7
|
(1)原式=-3+4
=1;
(2)原式=3-1+4
=6;
(3)原式=-3×2+
×(-12)1 6
=-6-2
=-8;
(4)原式=
×(-64 9
)×(1-1+3+9 4
-1 2
+1 8
)1 4
=-16×5 8
=-10.