问题
解答题
|
答案
(1)(
+3 7
)×73 28
=
×7+3 7
×73 28
=3+3 4
=3
;3 4
(2)
×63%+3 5
×63%7 5
=(
+3 5
)×63%7 5
=2×0.63
=1.26;
(3)5.2×
+1.8×0.251 4
=(5.2+1.8)×0.25
=7×0.25
=1.75.
|
(1)(
+3 7
)×73 28
=
×7+3 7
×73 28
=3+3 4
=3
;3 4
(2)
×63%+3 5
×63%7 5
=(
+3 5
)×63%7 5
=2×0.63
=1.26;
(3)5.2×
+1.8×0.251 4
=(5.2+1.8)×0.25
=7×0.25
=1.75.