人教版小学五年级数学上册能用简便就简便计算题.doc

一、能用简便的要简便计算12.340.25 12.96（9.61.52）8510.11.20.251.34 1030.25 （4.86.4）8 3512540.50.811.05 34.50.03+34.50.97（203.472.2）（1.30.2）84.312.5 97.50.39136.7 2.510286.40.240.254.228 11.16（100.7）(9.6+3.2)0.8 （30094.8）0.50.12516 12.63.5（9.88.7） 3.25.611.4 0.648（0.40.5）0.65.74995.74891.14.7 4.753.252.47.6 2.75.43.93.81.418.20.73.69.85-5.46 4.80.25 8.053.4+7.64.710.2 6.584.50.9 7.63997.632.80.5+1.586.732.561.443.2785.2+3.83.8+3.8 2.372.54 (6.7+6.7+6.7+6.7) 2.5 1.5102 9.8254 2400160.5320.250.125 2.83.23.27.2 7.40.152.8 3.760.250.490.008+0.9251.28 0.254.784 7.8（1.34）0.65201 7.20.90.017.2 1.22.50.82.58.610.1 2.57.14 5.6(12.58.5 0.85) 16.129916.12 (8.15.6) 0.91 0.4 5.20.90.98.254.08+0.754.08+4.08 4.3500.2 4.325.436.68 642.640.515.176.83.2 2615.715.724 12.75(2.756.8) (2.275 0.625)0.28 1.273.90.7316.1 3.94+34.30.2 12.84.95.1 1.2(9.62.4)4.86.75（0.93.75）8.91.14.7 1.341.83.660.22.75.43.9 0.960.280.040.72 3.69.85-5.46 12.78-(4.97+2.78)8.053.4+7.6 31.70.50.71.65 6.584.50.9 35.72- 4.9-（5.72+5.1）2.80.5+1.581113.672.83.677.2 324.90.9 12.56.3+271.25+0.1250.014.84.80.5 3.1+25.78+6.9 (1.250.125)815.25+4.72+4.75+5.28 4.8100.1 34.82(4.82+15.2)56.59956.5 7.28+0.94+2.72+0.06 7.0910.80.87.097.84+0.730.84 4.85 + 0.35 1.4 6.399+6.3 8.7 17.4 - 8.7 7.4 15.74.35.7 12.50.42.58 1.6+0.41.6+0.4 0.873.16+4.64 62.82.50.49.5101 7.399 0.68 （5.2 -3.5）1.25 (1.25+2.5) 8 40.5 0.81 0.18 9.421094.20.94.8 （15 2.4）1.82.48+1.521.8-0.5 213.0.82578.76+0.43.62.5+1.246.81+6.8199 6.5(10-3.7)+2.980.2518540 4.75+8.4(9.2-6.8)404.40.83.40.819.8-0.60.6-0.64(9.37+937+937+937)25 0.1257.91642.1.1.1.752.48(7.3-5.8)+1.57.522.376.3+2.373.7 12.773-4.5(0.75-0.356)+9.232.51.250.32 (6.4+0.88)0.8+3.21.253.810.124-5.4+(0.63+1.290.23)2.5(3.80.04) 2.18+4.65+7.82+5.35+12.5 7、我们每个人应该怎样保护身边的环境？21、人们发现银河系以外还有类似银河系一样庞大的恒星集团，如：仙女座星系、猎犬座星系，目前人类已发现了超过100亿个河外星系。16、大量的研究事实说明生命体都是由细胞组成的，生物是由细胞构成的。我们的皮肤表面，每平方厘米含有的细胞数量超过10万个。2、在加热的过程中，蜡烛发生了什么变化？（P29）7.69101 15.84-2.17-3.831、放大镜为什么能放大物体的图像呢？我们注意到它的特点了吗？（P3）3.810.111、显微镜的发明，是人类认识世界的一大飞跃，把有类带入了一个崭新的微观世界。为了看到更小的物体，人们又研制出了电子显微镜和扫描隧道显微镜。电子显微镜可把物体放大到200万倍。(25+2.5+0.25)4 20、在观星过程中，我们看到的天空中有一条闪亮的“银河”光带，实际是由许许多多的恒星组成的一个恒星集团，被人们称为银河系。我们生活的地球在银河系。0.2539+0.25 (35.245.6+45.663.8+45.624、目前，我国的航天技术在世界上占有相当重要的位置。“长征四号”运载火箭的顺利发射，载人飞船“神舟”五号和“神舟”六号和“神舟”七号也已经发射成功，“嫦娥”一号探月卫星又发射成功。答：尽可能地不使用一次性用品；延长物品的使用寿命；包装盒纸在垃圾中比例很大，购物时减少对它们的使用。0.12572 12.253.10.856.172、你知道哪些昆虫？460.33+540.33（1.91.90.9）（3.82.8）二、用竖式计算1.8+0.02= 5.7632.087.5=0.430.28= 0.720.9= 90.753.3 1.052.4= 4.60.6=0.20.01=16.90.13 1.890.54= 3.080.43= 0.2540= 3.70.0165.616.1=5.2229= 1.250.8=5.20.6 6.210.3= 13.953.1=5.566=6.40.5 1.30.9 5.930.767.80.35=5.255 21.840.7 32.08 8.40.25=0.0420.54 28.146.7 3.5413 4.1-1.2980.250.046 0.3961.2= 205.674 6.847.45 1.082515.613=5.40.036 36.722.40.1251.40.02514= 5.7785.4= 110.70.5410.13.3= 0.040.121.50.25= 1.2040.43= 3.259.04= 61.2=9.22.3=3.50.2= 7.1522 18.90.54= 6.450.73= 4.8 + 2 = 1.553.9 0.358.6= 1.526.7=3.524=8.41.3 540.36=7.21836 4.2524=35.44.2 0.4621.45.247.2 5.247.2 2.523.4 0.7560.36= 5.840.16 87.113.12.50.7= 3.0636=8.023.5= 1-0.01= 3.680.251.441.8=8.90.05= 7.61.05=4.480.4 5.860.2416.32515.560.834.80.250.1815= 8116.5-5.6= 13.760.8= 9.580.23= 18.723.6= 2.840.05 = 10.7512.5= 3.842.628.565.1= 0.420.308 0.760.32 4.323.62.7+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)185.5(6)8.881.25(7)34.70.25(8)2381.25(9)0.2512.53.2(10)124.68+324.68+524.68+724.68+924.68(11)5795.57955.7957579.5(12)1990198.9-1989198.8(13)2.250.16+2640.0225+5.22.25+0.22520(14)(1+0.28+0.84) (0.28+0.84+0.66)-(1+0.28+0.84+0.66) (0.28+0.84)(15)4.820.59+0.411.59-0.3235.9(16)0.1250.2532(17)164.5(18)0.251.2522.4(19)0.9+0.99+0.999+0.9999+0.99999(20)(72357+35728)(5174)(21)9898989899999999101010111111111(22)4.8(11.03-15.67.5)(23)(67.8+9.48) 0.96-2.5830.05(24)1.7+1.7(5.8-2.8)+(1.751.4)(25)3.048.7-3.042.9+5.86.96 (26)(0.1+0.2+0.3+0.4+1)5.5(27)3.146.5+4.53.14-3.14(28)12403.8+12451+1.241400+7609.6+0.76700(29)1(23) (34) (45) (19992000)(30)1-2+3-4+5-6+-98+99-100+100