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1、有理数混合运算计算题道Ting Bao was revised on January 6, 200211.计算-2. 5X (-4. 8) X (0. 09) 4-(-0. 27) ； (-3) X (-5)2； (-3)2-(-6)； (-4X32)-(-4X3)(-84-23)-(-84-2)3. (-2)2-(-52) X (-1)5+874- (-3) X (-1)4. -9+5X (-6)-(-4)2宁(-8)； 2X(-3) 3-4X (-3)+15. -8+44(-2)； 6-(-12) 4(-3) ； 3 (-4) + (-28) 4-7；(一7) (-5)-904(-15)
2、； 14- (-1) +04-4-(-4) (-1);18+324-(-2) 3-(-4)2X5. (-12)24-(-4)3-2X (-l)2n-l；(-2) 4+(-4) 2 (-1)7) 2m (53+35).(一 6) (一7) +(5) (+9)(一 5) X ( 3) 15X1+ ( ()X24)-7+3-6；(-3) X (-8) X25； (-616)4-(-28)；-100-27；2. (1) -2. 5+(-1/5) (2) 0. 4-(-(4) 1/3+ (-1/5) +1+2/3 (5) 27-18+(-7) -32(6) 0. 5+ (-1/4) - (-2.75)
3、+1/23. (1) 33. 1- (-22.9) + (-10.5)(2) (-8) - (-15) + (9) - (12)(3) -2/3+ (-1/6) - (1/4) 1/2(4) 3/5-3/2+(-11/4)+13/4(5) .125*3+125*5+25*3+2543/7X49/9-4/38/9X15/36+1/2712X5/6 - 2/9X38X5/4+1/464-3/8 -3/84-64/7X5/9+3/7X5/95/2- O/2+4/5)57/8+ (1/8+1/9)9X5/6+5/63/4X8/9-1/37X5/49+3/146X (1/2+2/3)8 X 4/5+8
4、X 11/531X 5/6 - 5/69/7- (2/7 - 10/21) 5/9X18 - 14X2/74/5X25/16+2/3X3/414X8/7 -5/6X12/15)17/32 - 3/4X9/243X2/9+1/35/7X3/25+3/73/14X X2/3+1/61/5X2/3+5/69/22+1/114-1/25/3X11/5+4/31/4) +1/6 (3) 1/3- (-5/6) +2/345 X 2/3+1/3 X157/19+12/19 X 5/61/4+58+370) 4- (64-45) 420+580-3/44-2/364X214-28136+6X (65-345
5、 23)8/7X21/16+1/2101X 1/5 - 1/5X2150+1604-40120-144一18+35347+45 X 2-41604-52(58+37) 4- (64-9X5) 95宁(64-45)178-145 宁 5 X 6+42812-700 4-(9+31X11)85+14X (14+2084-26) 120-36X44-18+35(58+37) 4- (64-9X5) (6. 8-6.8X0. 55)4-8. 50. 12X4.84-0. 12X4.8(3. 2X1. 5+2. 5) 4-1.66-1. 64-4=5. 38+7. 85-5. 37=7. 24-0. 8-1. 2 X 5=6-1. 19X3-0. 43=6. 5X (4. 8-1.2X4)=5. 8X (3. 87-0. 13) +4. 2X3. 7432. 52-5(7. 1-5.6 ) X0. 9-1. 15 4-2. 55. 4宁2. 6X (3. 7-2.9)+0. 62 12X64- (12-7.2) -6 12X64-7. 2-60. 68X1. 9+0. 32X1.9