问题
解答题
|
答案
(1)3.7×99+3.7,
=3.7×(99+1),
=3.7×100,
=370;
(2)
+3 4
-1 6
,3 8
=
-3 4
+3 8
,1 6
=
+3 8
,1 6
=
;13 24
(3)5.93+0.64+0.07+0.36,
=(5.93+0.07)+(0.64+0.36),
=6+1,
=7;
(4)(7.9-3.06÷0.68)×1.5,
=(7.9-4.5)×1.5,
=3.4×1.5,
=5.1;
(5)5.37-1.47-2.53,
=5.37-(1.47+2.53),
=5.37-4,
=1.37;
(6)105×(
+1 3
),1 5
=105×
+105×1 3
,1 5
=35+21,
=56.