问题
解答题
计算下面各题.
|
答案
(1)
-3 2
÷5 8
×3 4 3 5
=
-3 2
×5 8
×4 3 3 5
=
-3 2 1 2
=1;
(2)
+3 7
÷1 4
-2 5 1 4
=
+3 7
-5 8 1 4
=
+24 56
-35 56 14 56
=
;45 56
(3)
×12 19
+1 5
÷57 19
=
×12 19
+1 5
×7 19 1 5
=(
+12 19
)×7 19 1 5
=1×1 5
=
;1 5
(4)
-(17 18
+5 9
)×1 6 9 26
=
-17 18
×13 18 9 26
=
-17 18 1 4
=
;25 36
(5)
-(5 2
÷9 22
-36 55
)3 8
=
-(5 2
-5 8
)3 8
=
-5 2 1 4
=2
;1 4
(6)12÷(
×4+4 5
×4)6 5
=12÷[(
+4 5
)×4]6 5
=12÷(2×4)
=12÷8
=1.5.