问题
解答题
|
答案
(1)
×4 3
+5 12
×5 3
,5 12
=(
+4 3
)×5 3
,5 12
=3×
,5 12
=
;5 4
(2)(
×5 32
)÷15 16
,15 16
=(
×5 32
)×15 16
,16 15
=
×(5 32
×15 16
),16 15
=
×1,5 32
=
;5 32
(3)
×3 8
+3 4
×75%,5 8
=
×0.75+3 8
×0.75,5 8
=(
+3 8
)×0.75,5 8
=1×0.75,
=0.75;
(4)(1+25%)÷(1-25%),
=1.25÷0.75,
=
;5 3
(5)5×
+4 3
,1 3
=
+20 3
,1 3
=7;
(6)4
÷65%×41 3
×65%,1 3
=(4
×41 3
)×(65%÷65%),1 3
=
×1,169 9
=
.169 9