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1、2011.1.10直接写出得数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= 脱式计算,能简算的要简算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
2、.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
3、(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(30.2990.23)14
4、202847719-5311(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+96
5、9.9318) 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口算题32.52-82.5= 1503= 1260(12-6)= 1267.
6、2= 脱式计算,能简算的要简算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口算题89100= 0.82+0.08= 731= 5.6+99=0.6310= 410= 171000= 10025= 0.56+0.4= 1.25100= 脱式计算,能简算的要简算49102249 6.83(3.82.3)1.53.74.57.68(8.21.8)3/7 49/9 - 4/3
7、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+
8、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