问题
解答题
|
答案
(1)42÷(
÷5 14
)2 7
=42÷5 4
=33
;3 5
(2)(
×1 6
)×243 8
=
×241 16
=
;3 2
(3)
×2.5×11 20
×410 11
=(
×11 20
)×(4×2.5)10 11
=
×101 2
=5;
(4)
×24+24×1 9 8 9
=(
+1 9
)×248 9
=1×24
=24.
|
(1)42÷(
÷5 14
)2 7
=42÷5 4
=33
;3 5
(2)(
×1 6
)×243 8
=
×241 16
=
;3 2
(3)
×2.5×11 20
×410 11
=(
×11 20
)×(4×2.5)10 11
=
×101 2
=5;
(4)
×24+24×1 9 8 9
=(
+1 9
)×248 9
=1×24
=24.