问题
解答题
怎样算简便就怎样算.
24×
0.25×(1.6+1.6+1.6+1.6) |
答案
(1)
-6 7
÷6 7
×2 3
,1 6
=
-6 7
×6 7
×3 2
,1 6
=
-6 7
,3 14
=
;9 14
(2)
×[8 9
-(3 4
-7 16
)],1 4
=
×[(8 9
+3 4
)-1 4
],7 16
=
×[1-8 9
],7 16
=
×8 9
,9 16
=
;1 2
(3)24×
+51×51 43
,19 43
=
×51+51×24 43
,19 43
=(
+24 43
)×51,19 43
=1×51,
=51;
(4)0.25×(1.6+1.6+1.6+1.6),
=0.25×4×1.6,
=1×1.6,
=1.6.