问题
解答题
43×99+43 0.3×(77.6-5.6) 56×(
|
答案
(1)43×99+43,
=(99+1)×43,
=100×43,
=4300;
(2)0.3×(77.6-5.6),
=0.3×72,
=21.6;
(3)56×(
-3 7
)3 8
=56×
-56×3 7
,3 8
=24-21,
=3;
(4)
×5 7
÷3 5
,6 7
=
×3 7
,7 6
=
;1 2
(5)
+2 3
×5 8
,2 5
=
+2 3
,1 4
=
;11 12
(6)
×[3 8
÷(8 9
-5 6
)]3 4
=
×[3 8
×12],8 9
=
×3 8
×12,8 9
=4.