800-600÷2018×(537-488)720÷16÷5329-186-1425×37×419+199+1999+19999.

发布时间:2020-08-06 09:11:55

800-600÷2018×(537-488)720÷16÷5329-186-1425×37×419+199+1999+19999.

网友回答

解:(1)800-600÷20,
=800-30,
=770;

(2)18×(537-488),
=18×49,
=882;

(3)720÷16÷5,
=720÷(16×5),
=720÷80,
=9;

(4)329-186-14,
=329-(186+14),
=329-200,
=129;

(5)25×37×4,
=25×4×37,
=100×37,
=3700;

(6)19+199+1999+19999,
=(20-1)+(200-1)+(2000-1)+(20000-1),
=(20+200+2000+20000)-(1+1+1+1),
=22220-4,
=22216.
解析分析:(1)先算除法,再算减法;
(2)先算小括号里面的减法,再算括号外的乘法;
(3)根据除法的性质简算;
(4)根据减法的性质简算;
(5)运用乘法交换律简算;
(6)根据凑整法简算.


点评:本题考查了四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律进行简便计算.
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