问题
解答题
|
答案
(1)1
+0.5,2 3
=1
+2 3
,1 2
=
;13 6
(2)
-0.75,7 8
=0.875-0.75,
=0.125;
(3)
÷45 21
,1 5
=
×5 21
,5 21
=
;25 441
(4)(
+7 8
)×8,3 4
=
×8+7 8
×8,3 4
=7+6,
=13;
(5)5
+3.42+43 4
,1 4
=(5
+43 4
)+3.42,1 4
=10+3.42,
=13.42;
(6)99×0.25+0.25,
=(99+1)×0.25,
=100×0.25,
=25;
(7)5.73-1
+17 12
,7 12
=5.73+(1
-17 12
),7 12
=5.73+0,
=5.73;
(8)7.2÷100-0.72÷10,
=0.072-0.072,
=0;
(9)
×0.75+2 3
×1 3
,3 4
=(
+2 3
)×1 3
,3 4
=1×
,3 4
=
;3 4
(10)4.85-
-37 12
,5 12
=4.85-(
+37 12
),5 12
=4.85-4,
=0.85.