问题
解答题
计算题 (1)-9-3+5 (2)-12×(1
(3)0.752011×(1
(4)3-(-2)×(-1)-8÷(-
(5)|-3
(6)-110-(
|
答案
(1)-9-3+5=-12+5=-7;
(2)-12×(1
-1 3
+3 4
)=-12×5 6
-(-12)×4 3
+(-12)×3 4
=-16+9-10=-17;5 6
(3)0.752011×(1
)2012=1 3
2011×3 4
2012,=4 3
2011×3 4
2011×4 3
,=1×4 3
=4 3
;4 3
(4)3-(-2)×(-1)-8÷(-
)2×|-3+1|=3-2-8×4×2=3-2-64=-63;1 2
(5)|-3
|-|-8 11
|+(-27 10
)-(-39 11
)=34 5
-8 11
-27 10
+39 11
=4 5
-41 11
-9 11
+27 10
=38 10
+32 11
=11 10
+320 110
=121 110
;441 110
(6)-110-(
-13 14
)×[9-(-3)2]+11 12
÷3=-1-(1 2
-13 14
)×(9-9)+11 12
×1 2
=-1-0+1 3
=-1 6
.5 6