200.119.99-20.01199.7-2.001*1.998=

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/16 00:32:46

200.1*19.99-20.01*199.7-2.001*1.998=

200.1*19.99-20.01*199.7-2.001*1.998
=2001*1.999-2001*1.997-2.001*1.998
=2001*（1.999-1.997）-2.001*1.998
=2001*0.002-2.001*1.998
=2.001*2-2.001*1.998
=2.001*（2-1.998）
=2.001*0.002
=0.004002

200.1*19.99-20.01*199.7-2.001*1.998= (200.1+20.01+2.001+0.2001)÷0.1111=计算方法计算200.2×20.01-200.1×19.99 (200.1+20.01+2.001+0.2001)÷0.1111计算法 200.2*20.01-200.1*19.9 201.2*20.01-201.1*19.99简算 31*19.97+199.7*6.8+199.7*0.1= 简算 1998+199.8+19.98+1.998+2.222= 1999+199.9+19.99+1.999=? 1.001+2.003+1.005+2.007+1.009+2.001+.+1.197+2.199= 1999+199.9+19.99+1.999=(简便运算) 1999*3.14 199.9*3.14 19.99*3.14=?