初一数学计算题.doc

文档介绍：一、计算下列各题(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)1+1/2+1/6+1/12+1/20+···+1/110(14)101-3+5-7+9-11+···+97-99二、合并同类项(1)(2)(3)(4)(5)(6)三、计算题: (1) (2) (3) (4)  四、解方程: (1) (2) (3)(4)7(2x-1)-3(4x-1)=4(3x+2)-1(5)(5y+1)+(1-y)=(9y+1)+(1-3y)(6)20%+(1-20%)(320-x)=320×40%×49/9-4/×15/36+1/×5/6–2/9×348×5/4+1/÷3/8–3/8÷×5/9+3/7×5/-(3/2+4/5)+(1/8+1/9)×5/6+5/×5/49+3/×(1/2+2/3)×4/5+8×11/×5/6–5/-(2/7–10/21)×18–14×2/×25/16+2/3×3/4