(1)原式=8-10-2+5=8+5-10-2=13-12=1;
(2)原式=24×
-24×1 2
+24×3 4
=12-18+8=20-18=2;1 3
(3)原式=-9-30+6=-33;
(4)原式=-8×(-
)-1 64
=1 8
-1 8
=0;1 8
(5)原式=-8×
×(-5 2
)-4×(-5)=4 3
+20=80 3
;140 3
(6)原式=-
×11 5
×1 6
×5 6
=-3 11
.1 12