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问题：1.2023×20232023×202320232.4.2÷0.25÷43.2+4+6+8+、、、+96+98+2023.1/4×3÷1/4×35.1/1×3+1/3×5+1/5×7+、、、+1/19×216.2023×7＋2023×37
答案：↓↓↓ 牛军的回答： 网友采纳 1.2007×20082008—2008×20072007 =2007×2008×10001-2008×1007×10001 =0 2.4.2÷0.25÷4 =4.2÷(0.25×4) =4.2÷1 =4.2 3.2+4+6+8+、、、+96+98+100 =(2+100)×50÷2 =2550 4.1/4×3÷1/4×3 =1/4÷1/4×3×3 =9 5.1/1×3+1/3×5+1/5×7+、、、+1/19×21 =(1/2)×(1-1/3+1/3-1/5+1/5-1/7+.+1/19-1/21) =1/2×(1-1/21) =10/21 6.9999×7＋1111×37 =1111×9×7+1111×37 =1111×(63+37) =1111×100 =111100 | 
