问题
解答题
脱式计算.(能简算的要简算.)
|
答案
(1)(12-13)÷13+16,
=(-1)÷13+16,
=-
+16,1 13
=15
;12 13
(2)19÷(34+56),
=19÷90,
=
;19 90
(3)551114÷11,
=(551111+3)÷11,
=(551111+3)×
,1 11
=551111×
+3×1 11
,1 11
=50101+
,3 11
=50101
;3 11
(4)0.6×1825+60%×625+35×125,
=0.6×1825+0.6×625+35×125,
=0.6×(1825+625)+35×125,
=0.6×2450+4375,
=1470+4375,
=5845;
(5)(13+18-16)×24,
=(31-16)×24,
=15×24,
=360;
(6)5×(215+120)-512,
=5×335-512,
=1675-512,
=1163.