A-A+
计算:(1)9+(-1.4)-(6)-(-125);(2)(-12)×(34+56-1);(
问题详情
计算:
(1)9+(-1.4)-(6)-(-1
(2)(-12)×(
(3)(-
(4)5+36÷(-3)2×(-
参考答案
(1)原式=9-1.4-6+125
=9-6+125-1.4
=3;
(2)原式=(-12)×34+(-12)×56-(-12)×1
=-9-10+12
=-19+12
=-7;
(3)原式=(-5)×(12-14+34)
=(-5)×1
=-5;
(4)原式=5+36÷9×(-12)-(-1)
=5+4×(-12)+1
=5-2+1
=4.
考点: