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199加19.9加1.99加0.199的简便计算的过程还有243.25加543.25加743.25加943.25
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199加19.9加1.99加0.199的简便计算的过程还有243.25加543.25加743.25加943.25
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答案和解析
199+19.9+1.99+0.199
=200+20+2+0.2-1.111
=222.2-1.111
=221.089
243.25+543.25+743.25+943.25
=240+540+740+940+3.25x4
=780+1680+14
=780+20-6+1680
=2480-6
=2476
=200+20+2+0.2-1.111
=222.2-1.111
=221.089
243.25+543.25+743.25+943.25
=240+540+740+940+3.25x4
=780+1680+14
=780+20-6+1680
=2480-6
=2476
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