1998+199.8+19.98+1.98+2.222计算过程怎么算
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![1998+199.8+19.98+1.98+2.222计算过程怎么算](/uploads/image/z/106456-40-6.jpg?t=1998%2B199.8%2B19.98%2B1.98%2B2.222%E8%AE%A1%E7%AE%97%E8%BF%87%E7%A8%8B%E6%80%8E%E4%B9%88%E7%AE%97)
1998+199.8+19.98+1.98+2.222计算过程怎么算
1998+199.8+19.98+1.98+2.222计算过程怎么算
1998+199.8+19.98+1.98+2.222计算过程怎么算
将2.222写成2+0.2+0.02+0.002,然后
原式=1998+2+199.8+0.2+19.98+0.02+1.998+0.002
=2000+200+20+2
=2222
先加一个1.998和2.222加,依次往上加1.98,19.98……最后再减1.998