第21章 二次根式 混合计算能力提升练习　2025-2026学年华东师大版九年级数学上册

:2（8+8)) 小+寺×2收) 器-釙+gDs (+-8--8a :÷0-(0s+8）(D 点中 (-（8-+sy②：+÷2小-8 煮1E (-+9÷(-8② (z+卧9)-8(D /政型煮1乙 :,e-s+-+)<e) :9-趴÷\+s卧×（⑦）：+9-\+(D :点11 K羏群（得真1号歌平汉二桌IZ患 少-(-儿++（月②。+×D 点16 z(I-) +中8)(+)(2-)-小×（釙-）()‘8+卧-2小：D :煮1‘8 +9×:--- (b) 小+-÷(8-L孙8)(e) '国g×g@ +釙-L(D 煮L 小×釙- (-D 点19 9÷\+小×卧-趴÷8小() ÷(L8-82)() :1I ,--(-)(-8)) :÷(8小+卧？-9)() (卧？-)÷9 :9+038-06(D :点1‘I G竿+2o :小×釙-趴÷L小+8吵(D :煮1‘乙1 2÷(9e-)t) 9×(©+8(E) :ze×+,-)a z-\+8(D 点1[I ,（-)+0--+,z03() ÷0×0(I :点10L :点1‘8 z☑8-闷-+闷()÷(8小+卧-z小9() +小×卦-趴÷8小() 8小号+6-9(D :意1‘LL +-习-（-) :÷(8+卧？-z小g)() 其×÷g 8小-趴+e(D 則阳平陋、1‘9[ 「小+(-×+--8g+-红-+-D 煮1SI -++-冈) :\+卧？-() (1)V18-2y9+V2-21: 2)(5-V2)2.(6+1)(6-1). 80-45 (3)5 -F×2 19.计算： (1)(-1)2024-2×(-青)-2+V25÷(-青). (2)5-2H(-主)2.(2022-号)0+1 20.计算. (1)V24×4y月÷V48, (2)2-3得+5--(). (3)(2W3-V6+(54+V6÷3 48+2月2023-2月2024 参考答案 1.解：(1)原式=2V5+22-55+V2 =32-35; (2)原式=5×5×5-V27÷3-6W得 =55-3-25 =35-3: (3)原式=3-4+5-65+9 -13-65. 2.解：(1)V48-3V+V32 =45-（5+42) =45-V5-42 =35-42: 2（⑧-24÷5+1- =5-2+(4-25 =5-2+4-2W5 =2-5. 3.解：(1)V18-V2÷5+2月 =35-5+2×号 =3V2-VE+V2 =3V2, 2(5+35-3-(3月 =(5°-32-3 6 =5-9-3 =-7 4.解：1)V(V⑧+5可)-V80÷5 =36+100-V16 =6+10-4 =12; 26-2-3-万3+5) =4-42+2-(9-7) =4-42. 5.解：(1)原式=45+号-35 2照就=225×号×古 含 (3)原式=(22°+2×22×35+(332 =8+126+27 =35+126. 6.解：1)(5-2己 =3+2-26 =5-26: V80-45 (2)5 -悟x2 =45-3 -4 =1-2 =-1. 7 7.解：(1)原武=35-号+V5 (2)原式=V6-V16+V4 =V6-4+2 =6-2. (3)原式=227÷3-V48÷3-5+V骨 =6-4-5+号 =2- 4W5-°-25-3回×35+25 =12-4y5+1-(12-18) =12-4y3+1-12+18 =19-45. 8.解：)原式=65-号+45 =95; (2)原式=6反-V反-9+8 =52-1: 3)原式=9+5-25+1 =5-2+6-2W5 =4-5. 9.解：1)×+(29 =2+1 =3; (2)原式=2+1-3-2W3 =-23. 10.解：(1)V10×V80÷V2 =V10×80÷2 =V400 =20: (2(N2024°+-5-20+(-v5月 =1+v5-25+5 =6-5 11.解：(1)原式=32+V2-42,=0: (2)原式=2+3-2V6+6眉 =2+3-2W5+2V5 =5; (3)原式=V48+V18=45+32: (4)原式=42÷22-36÷22-2-V5. 12.解：(1)8+27÷5-V厦×V24 =3E+5-8 =32+3-2V2 =3+V2: e版+六 -25+司 2+1 =4+4y5+3 =2W5+V2+1-(2+25+ =2V5+V2+1-2-23- 9 =反-， 13.解：(1)V90-3V20+5V月 =3W0-65+5 =3V10-55, 2)627÷4W写·（-2冒 =6××(-2小27×星×有 =-3×9 =-9 3)(3V2-2V+V48÷25 =(65-5+4÷2W5 =3-青+2 =号； 46-3)(-E-（-月 =-45+6-(1-23+3) =-45+6-1+25-3 =2-25. 14.解：(1)(248-3V27÷V6 =(85-9同÷6 =-5÷6 =-9: (2)4⑧÷3-眉×V2+V24÷V6 =V16-V4+V4 10