问题 解答题
脱式计算.(能简算的要简算.)
(12-13 )÷13+1619÷(34+56 )551114÷11
0.6×1825+60%×625+35×125(13+18-16 )×245×(215+120 )-512.
答案

(1)(12-13)÷13+16,

=(-1)÷13+16,

=-

1
13
+16,

=15

12
13

(2)19÷(34+56),

=19÷90,

=

19
90

(3)551114÷11,

=(551111+3)÷11,

=(551111+3)×

1
11

=551111×

1
11
+3×
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.

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