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2011.1.10直接寫出得數(shù)5.43+1.47= 53.28=0.464.6= 40.25=30.3= 4.50.4=0.630.7= 9.581019.58=85(10.9)= 1.80.4= 脫式計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算8.610.15.6(12.58.5 0.85)(8.15.6) 0.91 0.4 8.254.08+0.754.08+4.081.84(28.02+11.98) (62.862.3) 3.61.20.82.730.814(9.851.07) 60(9.528.9)0.182.8810.430.243.520(2.441.8)0.40.152011.1.1128-(3.4+1.252.4) 2.557.1+2.457.17779+11113 0.815.5-(3.21+5.79)(31.8+3.24)5 31.54(6+3)0.64257.8+2.2 22.5+2.5219464.81.80.9 36.724.259.9 2011.1.120.40.70.25 89+124+11+26+48 875-147-23 25125408 1478+853 1256451807056242.42.50.8(4121+2389)7 1554(72-58)3 (947599)7664 2011.1.1336(91327623) (932521)9 5071363498 723(521504)25 3841223371 (3921)(3966) 156(17.7-7.2)3 37.85-(7.85+6.4) 30 28(5+969.9318) 81(72-54)9 2011.1.1417899+178 7942+79+7957 7300254 810047598199 123181233+85123 50(344)3 25(24+16) 4(2565+2528) 138254 (13125)(38) (12+24+80)50 2011.1.152700(506499)900 33.02(148.490.85)2.5(111)5.118.1(30.2990.235311(0.1258-0.5)4 8 82( + )3 45000.475 2011.1.160.40.70.25 89+124+11+26+48 875-147-23 25125408 1478+853 1256451807056242.42.50.8(4121+2389)7 1554(72-58)3 (947599)7664 2011.1.1736(91327623) (932521)9 5071363498 723(521504)25 3841223371 (3921)(3966) 156(17.7-7.2)3 37.85-(7.85+6.4) 30 28(5+969.9318) 81(72-54)9 2011.1.181.9-17.869.419(599+672428) (426672+1943)11(1+3+5+7+9)+23(2+4+6+8+10)(58+370)(74-55)420+580-642 (136+64)(55-34523) 388+(5050-1100) 124812= 3.22+7.5= 66-1604= 15.38+7.85-15.37= 7.20.8-1.20= 6-0.43= 6.5(4.8-1.24)= 5(8.13-1.13)= 2011.1.19口算題32.52-82.5= 1503= 1260(12-6)= 1267.2= 脫式計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算0.681.9+0.321.9= 1.25800.42.5 12(2.40.48)5 40+450181.2 32513(266-250) 196.5+(33.5-243081) 140-905+678973603360 428(30801980)7422011.1.20口算題89100= 0.82+0.08= 731= 5.6+99=0.6310= 410= 171000= 10025= 0.56+0.4= 1.25100= 脫式計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算49102249 6.83(3.82.3)1.53.74.57.68(8.21.8)3/7 49/9 - 4/3 8/9 15/36 + 1/27 2011.1.225016040 (58+370)(64-45) 120-14418+35 347+452-416052 (58+37)(64-95) 2011.1.246-1.193-0.436.5(4.8-1.24) 0.681.9+0.321.9 10.15-10.750.4-5.7 5.8(3.87-0.13)+4.23.74 32.52-(6+9.7283.2)2.5 (13125)(38) (12+24+80)502532125 276+228+353+219 (375+1034)+(966+125) (2130+783+270)+1017 99+999+9999+99999 7755(2187+755) 2214+638+286 7300254 8100475 2356(1356721)1235(17801665) 7527+192 5 31870+13310 4(2565+2528) 2.73 0.89 1.27 4.37 0.28 1.63 5.72 2011.1.2910 0.432 2.568 930 0.6 5 63.4 2.5 0.4 (7.7 1.54) 0.7 2011.1.31(11.7 9.9) 0.9 6.94.83.1 15.89(6.755.89) 7.852.340.854.66 35.61.815.67.2 13.75(3.756.48) 2011.2.218 (2+9) 57.26(5.261.5) 106.25+3.852.125+3.875 11.9245621 5/1142.75 13.375+5.75+2.25+6.625 (15.19036)18 163.85.25+14.5 172.14.3+5.72.1 42(25+4)4 363/2184 0.81/0.25+5.965 4031327 46.1.54.20.750.25 3.274 +3.275.7 (1.2+ 1.8)4.5102576832 0.25800.450.9 50.102576832 3.416(0.01635)0.8(106.76)1.2(58+37)(64-95) 95(64-45) 178-14556+42 420+580-642128 812-700(9+3111) (136+64)(65-34523) 85+14(14+20826)(284+16)(512-820818)2011.2.7120-36418+35(6.8-6.80.55)8.5 0.12 4.80.124.8(3.21.5+2.5)1.6 10.15-10.750.4-5.75.8(3.87-0.13)+4.23.740.921.01 15.613.115.615.62.14.90.84.90.8 12.96(9.61.52)1.20.251.34 (4.86.4)840.50.811.05 (203.472.2)(1.30.2)(181+2564)+2719 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) (2130+783+270)+10177755(2187+755) 2214+638+286 306573810659 5/6 + 5/6 3/4 8/9 - 1/3 7 5/49 + 3/14 6 ( 1/2 + 2/3 ) 8 4/5 + 8 11/5 31 5/6 5/6 2011.2.149/7 - ( 2/7 10/21 )5/9 18 14 2/7 7/19 + 12/19 5/6 1/4 + 3/4 2/3 8/7 21/16 + 1/2 101 1/5 1/5 21 5016040 120-14418+35 2011.2.16347+452-416052 (58+37)(64-95) 126(12-7.2)-6 1267.2-6 0.681.9+0.321.9 2011.2.18(58+370)(64-45) 420+580-642128 136+6(65-34523) 15-10.750.4-5.7 18.1(30.2990.23)1 125768 8.332.434.57 103326.7 2.634.3 41000812558248(8578) 84028701895(64-45) 178-14556+42 420+580-642128 812-700(9+3111) (136+64)(65-34523) 2011.1.2385+14(14+20826) (284+16)(512-820818) 32(25+125) 178101178 8436+6484 2011.1.257599+275 83102832 123181233+85123 50(344)3 25(24+16) 17899+178 30657381065 2357183317357 23651086214 138254 2011.1.27(13125)(38) (12+24+80)502532125 32(25+125) 9.3 5.26 2.74 13.4(3.45.2) 14.9(5.24.9) 18.32 5.47 4.32 17.29 5.28 6.29 25 6.8 0.04 0.25 32 0.125 6.4 1.25 12.5 3.28 5.7 6.72 5.7 2.1 99 2.1 47.87.45+2.55 66.868.661.34 0.2516.24 0. 2532 0.125 2 .5 (4 +0.4) 2011.2.1(1.250.125)8 56.59.956.55.411-5.4 19.10245-328 2.83.1+16/8 2011.2.323(50-12.5) 2.5 242/51/3 25.611047+639 3.52.7-52.2/18 281/71/5 3.3750.97+0.976.625 2011.2.50.64257.8+2.222.5+2.5219464.81.80.9 36.724.259.9 51807056 242.42.50.8 (4121+2389)7 67115-974 32.52-(6+9.7283.2)2.52.311.20.5 994.3 13243.756.32011.2.812.78-(4.972.78) 63.42.50.4 0.80.880.224.60.354.60.65 2011.2.1097.50.39136.7 86.40.240.2511.16(100.7) (30094.8)0.512.63.5(9.88.7) 0.648(0.40.5)0.62x0.828.2 30.5x7 2011.2.12(13125)(38) (12+24+80)502356(1356721) 1235(17801665) 7527+192 5 31870+13310 4(2565+2528)4/5 25/16 + 2/3 3/4 14 8/7 5/6 12/1517/32 3/4 9/24 3 2/9 + 1/3 5/7 3/25 + 3/7 3/14 2/3 + 1/6 1/5 2/3 + 5/6 9/22 + 1/11 1/2 5/3 11/5 + 4/3 95(64-45) 178-14556+42 812-700(9+3111) 85+14(14+20826) 120-36418+35 (58+37)(64-95) (6.8-6.80.55)8.5 0.12 4.80.124.8 (6.8-6.80.55)8.5 0.12 4.80.124.8 (3.21.5+2.5)1.6 3.26+(1.5+2.5)1.6 0.681.9+0.321.92011.2.1910.15-10.750.4-5.7 5.8(3.87-0.13)+4.23.74 1.25800.42.5 12(2.40.48)5 2011.1.210.256.8241.3440.16242.684.8-3.683.61.20.82.79.21.053.4 (2.63.21.28)1.7(得數(shù)保留兩位小數(shù))120-36418+35 (58+37)(64-95) (6.8-6.80.55)8.5 0.12 4.80.124.8 (3.21.5+2.5)1.6 3.2(1.5+2.5)1.6 6-1.64 5.38+7.85-5.37 7.20.8-1.25 7942+79+7957 7300254 8100475 158+262+138 375+219+381+225 2011.1.2650012471021232 (181+2564)+2719 378+44+114+242+222 178101178 8436+6484 7599+275 83102832 123181233+8512350(344)3 25(24+16) 2011.1.2817899+178 7942+79+7957 2011.1.301.7 9.9 0.17 23 0.1 2.3 9.9 0.18 4.26 0.18 4.26 0.58 1.3 0.58 1.3 7.3 4 2.7 0.25 3.75 0.5 2.75 2 5.26 0.125 2.74 8 9.5 (1.9 8) 12.8 (0.4 1.6) 3.834.563.835.44 7.0910.80.87.09 3.654.736.50.37 13.70.253.74 10.716.1-1.110.7 +10.7 5 3.9(1.35) 63.42.50.4 (7.71.4)0.7 6.54+2.4+3.46+0.6 95.61.8+95.68.2 35.6420/124 344/3.6-5.40.25 16/2+30/2+90/6 5000-10534 2011.2.40.15/0.25+0.751.2 41(1/2+1/3+1/4)0.24 46912+1492 405(3213-3189)19.46.12.3 (58+37)(64-95)5.670.2-0.6218.10.92+3.93 2011.2.60.40.70.25 0.75102 (58+370)(64-45) 120-14418+35 347+452-41605223.40.813.47.22.95101-2.95 (1.250.25)4 6310.1-630.1

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