计算:121×0.13+12.1×0.9-12×1.21=______.
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计算:121×0.13+12.1×0.9-12×1.21=______.
![计算:121×0.13+12.1×0.9-12×1.21=______.](/uploads/image/z/1338969-57-9.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A121%C3%970.13%2B12.1%C3%970.9-12%C3%971.21%3D______%EF%BC%8E)
121×0.13+12.1×0.9-12×1.21
=12.1×1.3+12.1×0.9-12.1×1.2
=12.1×(1.3+0.9-1.2)
=12.1×1
=12.1.
=12.1×1.3+12.1×0.9-12.1×1.2
=12.1×(1.3+0.9-1.2)
=12.1×1
=12.1.
计算:121×0.13+12.1×0.9-12×1.21=______.
计算:5002-499×501=______.
计算:1232-122×124=______.
计算:1001×1001-1001=______.
简便计算:101×99=______.
计算:888×999=______.
计算:lg2+lg5=______.
计算:1.996+19.97+199.8=______.
计算5.762-4.242=______.
计算:57.32°=______度______分______秒.
根据化学方程式计算的一般解题步骤是______、______、______、______、______.
计算:12-22+32-42+…+992-1002=______.