初一年级有理数计算题集(500题)

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20、666)34370.371.372.m.374.375.376.377.37S.2398.3W. (-5/-3x(-1)390. 1997x20002000-2000x199719974（）a -2耳十估 IF39LW-lOStf+lVSl2-!9523 十十 19972-19982+1999a40L (-Dl0x2+(-2)a+4392.1q禺y严一云394.1+2 +1 + 2 + 3 + + f+2+ 371()0987654321 x9X7654324 987654323 x 9876543224D.1.4W.x(-1-)0.5-s-2X-552142395.2334 4 410010

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22、43.2010 2000442. I + 2 + (亠3) + (4) + 5+6 + (7) + (8) +,+(23)+(24)#433. J 4 (4 *3.5 x l)j x2 十(3)444.(1)x(1)x(l)X111x(1)20092008'20071000#434. (35-7,75-425)+13#445 !9(-7)-128-(-7)+33-?-(-7)436. 0425 + (+3-) + (-3-)4(+丄)+ (T.25)4x5 5xft446.48843Z -5-H-9-)-3-M7k75632#447.I 1110x11 llx；+ “+ 59x60#1

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