问题
解答题
计算: (1)(-3)+(-4)-(+11)-(-19) (2)(4)-32×2+3×(-2)2 (3)(
(4)1
|
答案
(1)原式=-3-4-11+19
=-18+19
=1;
(2)原式=-9×2+3×4
=-18+12
=-6;
(3)原式=
×36-1 9
×36-1 6
×361 18
=4-6-2
=4-8
=-4;
(4)原式=
×7 6
×3 2
×5 4 6 5
=
.21 8