问题
解答题
|
答案
①(
+5 6
)×24,3 8
=
×24+5 6
×24,3 8
=20+9,
=29;
②0.25×1.25÷
,1 32
=0.25×1.25×32,
=0.25×1.25×4×8,
=(0.25×4)×(1.25×8),
=1×10,
=10;
③6.37-
+1.63-4 7
,3 7
=6.37+1.63-
-4 7
,3 7
=(6.37+1.63)-(
+4 7
),3 7
=8-1,
=7;
④4.6×101,
=4.6×(100+1),
=4.6×100+4.6×1,
=460+4.6,
=464.6.