人教版小学五年级数学上册能用简便就简便计算题

人教版小学五年级数学上册能用简便就简便计算 题 快递公司问题件快递公司问题件货款处理关于圆的周长面积重点题型关于解方程组的题及答案关于南海问题 一、能用简便的要简便计算 12.3×4×0.25 85×10.1 103×0.25 35?125 34.5×0.03+34.5×0.97 12.96,(9.6,1.52) 1.2?0.25，1.3×4 (4.8，6.4)?8 40.5?0.81×1.05 (203.4，72.2)?(1.3×0.2) 8×4.3×12.5 97.5?0.39,136.7 2.5×102 4.2?28 (9.6+3.2)?0.8 0.125×16 86.4?0.24×0.25 11.16?(10,0.7) (300,94.8)?0.5 12.6?[3.5,(9.8, 8.7)] 3.2×5.6,11.4 5.74×99，5.74 4.75，3.25×2.4，7.6 3.8×1.4，18.2?0.7 4.8×0.25 0.648?[(0.4，0.5)×0.6] 8(9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46 8.05×3.4+7.6 4.7×10.2 7.63×99，7.63 6.73，2.56，1.44，3.27 2.37×2.5×4 1.5×102 6.58×4.5×0.9 2.8×0.5+1.58 8×5.2+3.8×3.8+3.8 (6.7+6.7+6.7+6.7) ×2.5 9.8×25×4 2400?16?0.5 2.8×3.2，3.2×7.2 3.76×0.25,0.49 0.25×4.78×4 0.65×201 32×0.25×0.125 7.4,0.15×2.8 0.008+0.92×5,1.28 7.8?(1.3×4) 7.2×0.9，0.01×7.2 1.2×2.5，0.8×2.5 2.5×7.1×4 16.12×99，16.12 5.2×0.9，0.9 4.3×50×0.2 8.6×10.1 5.6×(12.5,8.5 ?0.85) [(8.1,5.6) ×0.9,1] ×0.4 8.25×4.08+0.75×4.08+4.08 4.32，5.43，6.68 64,2.64×0.5 26×15.7，15.7×24 (2.275 ，0.625)×0.28 3.94+34.3×0.2 1.2×(9.6?2.4)?4.8 15.17,6.8,3.2 12.75,(2.75，6.8) 1.27，3.9，0.73，16.1 12.8,4.9,5.1 6.75,(0.9，3.75) 8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46 8.05×3.4+7.6 6.58×4.5×0.9 1.34，1.8，3.66，0.2 0.96,0.28，0.04,0.72 12.78-(4.97+2.78) 31.7 ,0.5×0.7,1.65 35.72- 4.9-(5.72+5.1) 2.8×0.5+1.58 32，4.9,0.9 4.8,4.8×0.5 (1.25,0.125)×8 4.8×100.1 111,3.67×2.8,3.67×7.2 12.5×6.3+27×1.25+0.125?0.01 3.1+25.78+6.9 15.25+4.72+4.75+5.28 34.82,(4.82+15.2) 56.5×99，56.5 7.09×10.8,0.8×7.09 4.85 + 0.35 ?1.4 8.7 ×17.4 - 8.7 ×7.4 12.5×0.4×2.5×8 7.28+0.94+2.72+0.06 7.84+0.73—0.84 6.3×99+6.3 15.7—4.3—5.7 1.6+0.4—1.6+0.4 0.87×3.16+4.64 62.8?2.5?0.4 9.5×101 0.68 ?(5.2 -3.5)× 40.5 ?0.81 ×0.18 4.8 ×(15 ?2.4) 1.25 7.3×99 (1.25+2.5) ×8 9.42×10—94.2×0.9 1.8×2.48+1.52×1.8-0.5 2(13.×0.×8257 6.81+6.81×99 0.25×185×40 4.4×0.8,3.4×0.8 (9.37+9(37+9(37+9( 37)×2(8.76+0.4×3.6×2.5+1.24 6.5×(10-3.7)+2.98 ,4.75+8.4?(9.2-6.8),×40 19.8-0.6×0.6-0.64 5 0.125×7.9×16 4(2.×1.，1.×1.75 2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1 2.5×(3.8×0.04) 2.48×(7.3-5.8)+1.5×7.52 12.773-,4.5×(0.75-0.356)+9.23, (6.4+0.88)?0.8+3.2×1.25 24-,5.4+(0.63+1.29?0.23), 2.18+4.65+7.82+5.35+12.5 7.69×101 3.8×10.1 0.25×39+0.25 0.125×72 46×0.33+54×0.33 15.84-2.17-3.83 (25+2.5+0.25)×4 (35.2×45.6+45.6×63.8+45.6 12.25,3.1，0.85,6.17 ((1.9,1.9×0.9)?(3.8 ,2.8) 二、用竖式计算 1.8+0.02= 5.76×3, 2.08×7.5= 0.43×0.28= 0.72?0.9= 0.2?0.01= 0.25×40= 90.75?3.3 16.9?0.13 3.7×0.016 1.05×2.4= 1.89?0.54= 5.61?6.1= 4.6×0.6= 3.08×0.43= 5.22?29= 1.25×0.8= 5.2×0.6 6.21?0.3= 13.95?3.1= 5.5×66= 7.8×0.35= 8.4×0.25= 6.4×0.5 5.25×5 0.042×0.54 1.3?0.9 21.84?0.7 28.14?6.7 5.93×0.76 3—2.08 3.54×13 4.1-1.298 0.25×0.046 0.396?1.2= 20,5.674 6.84×7.45 36.72?2.4 110.7?0.54 1.08×25 0.125×1.4? 10.1?3.3= 15.6×13= 0.025×14= 0.04×0.12 , 5.4?0.036 5.778?5.4= 1.5×0.25= 1.204?0.43= 3.25×9.04= 6?1.2= 9.2?2.3= 3.5×0.2= 4.8 + 2 = 3.5×24= 7.15×22 1.55?3.9 8.4×1.3 18.9?0.54= 0.35×8.6= 54?0.36= 6.45×0.73= 1.5×26.7= 7.218?36 4.25×24= 35.4×4.2 0.462?1.4 5.24?7.2 5.24?7.2 87.11?3.1 1-0.01= 2.52×3.4 2.5?0.7= 3.68×0.25 0.756?0.36= 3.06×36= 1.44?1.8= 5.84?0.16 8.02×3.5= 8.9×0.05= 7.6×1.05= 4.48×0.4 5.86?0.24 16.32?51 5.56?0.83 6.5-5.6= 2.84×0.05 = 4.8×0.25, 13.76×0.8= 10.75?12.5= 0.18×15= 9.58?0.23= 3.84×2.6? 8?11 18.72?3.6= 28.56?5.1= 0.42×0.308 0.76×0.32 4.32?3.6 2.7+3.13 三、速算与巧算 (1)5.8+2.32+0.68+4.2 (2)1999+199.9+19.99+1.999 (3)12.59-3.24-5.76 (4)8.1+7.8+8.2+8.4+7.9+7.7 (5)18×5.5 (6)8.88×1.25 (7)34.7×0.25 (8)238?1.25 (9)0.25×12.5×3.2 (10)124.68+324.68+524.68+724.68+924.68 (11)5795.5795?5.7957×579.5 (12)1990×198.9-1989×198.8 (13)2.25×0.16+264×0.0225+5.2×2.25+0.225×20 (14)(1+0.28+0.84) ×(0.28+0.84+0.66)-(1+0.28+0.84+0.66) (15)4.82×0.59+0.41×1.59-0.323×5.9 (0.28+0.84) × (16)0.125×0.25×32 (17)16×4.5 (18)0.25×1.25×22.4 (19)0.9+0.99+0.999+0.9999+0.99999 (20)(72×357+357×28)?(51×7×4)