计算:454+999×999+545=______. 8.08×11.23+11.23×10.92+11.23=_
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计算:
454+999×999+545=______.
8.08×11.23+11.23×10.92+11.23=______.
125×198÷(18÷8)=______.
454+999×999+545=______.
8.08×11.23+11.23×10.92+11.23=______.
125×198÷(18÷8)=______.
(1)454+999×999+545,
=454+545+999×999,
=999+999×999,
=999×(1+999),
=999×1000,
=999000;
(2)8.08×11.23+11.23×10.92+11.23,
=11.23×(8.08+10.92+1),
=11.23×20,
=224.6;
(3)125×198÷(18÷8),
=125×198÷18×8,
=125×8×(198÷18),
=1000×11,
=11000.
=454+545+999×999,
=999+999×999,
=999×(1+999),
=999×1000,
=999000;
(2)8.08×11.23+11.23×10.92+11.23,
=11.23×(8.08+10.92+1),
=11.23×20,
=224.6;
(3)125×198÷(18÷8),
=125×198÷18×8,
=125×8×(198÷18),
=1000×11,
=11000.
计算:888×999=______.
计算:99999+9999+999+99+9=______.
计算:5002-499×501=______.
计算:1232-122×124=______.
计算:1001×1001-1001=______.
简便计算:101×99=______.
计算:lg2+lg5=______.
计算:1.996+19.97+199.8=______.
计算5.762-4.242=______.
计算:1000+999-998+997+996-995+…+103+102-101=______.
计算:57.32°=______度______分______秒.
用计算器计算下列各式,将结果填在横线上:①99²=_ ②999²=_③9999²=_④99