问题
解答题
计算下列各题 (1)-5+6-7+8 (2)
(3)11+(-35)-4×(-6) (4)-48×(
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答案
(1)原式=(-5-7)+(6+8)
=-12+14
=2;
(2)原式=(
-1 2
)+(-1 2
-2 3
)+1 3 4 5
=0-1+4 5
=-
;1 5
(3)原式=11-35+24
=35-35
=0;
(4)原式=-24+30-16+44
=74-40
=34.