五年級(jí)奧數(shù)小數(shù)巧算練習(xí)題

1、(word圓滿版)五年級(jí)奧數(shù)小數(shù)的巧算練習(xí)題(word圓滿版)五年級(jí)奧數(shù)小數(shù)的巧算練習(xí)題(word圓滿版)五年級(jí)奧數(shù)小數(shù)的巧算練習(xí)題五年級(jí)奧數(shù)小數(shù)的巧算練習(xí)題11.135+3.346+5.557+7.768+9.9798.754.7+15.9252.1.996+19.97+199.89.28.6767+32286.7+573.40.053.6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78+1.8910.172.46.2+27240.3811.0.0001810.000114.1.1+3.3+5.5+7.7+9.9+11.11+13.13+15.15+17.17+1

2、9.19963個(gè)01028個(gè)012.12.34+23.45+34.56+45.67+56.78+67.89+78.91+89.12+91.5.2.894.68+4.686.11+4.68236.17.4837-17.4819+17.488213.a=0.000105b=0.00019計(jì)算a+ba-baba1994個(gè)01996個(gè)0b7.1.250.322.514.20.19.9837-199.81.9+19980.8215.3.71-2.74+4.7+5.29-0.26+6.321.13.59.9+6.5+5.7510.116.(5.25+0.125+5.75)822.0.1250.250.56

3、417.34.58.23-34.5+2.7734.523.11.843-8600.0918.6.250.16+2640.0625+5.26.25+0.6252024.32.14+64.280.53780.25+0.537864.280.75-864.280.1250.537819.0.035935+0.035+30.035+0.07610.50.88812573+99931998+199.8+19.98+1.99826.a=0.000125b=0.0008計(jì)算a+ba-baba1996個(gè)02000個(gè)0b=17.48100=17488.1原式=(1.250.8)(0.42.5)=11=19.750原式=754.7+5.3(325)=75(4.7+5.3)=7510=75010.2867原式=28.6767+3228.67+28.67(200.05)=28.67(67+32+1)=28.67100=2867五年級(jí)奧數(shù)小數(shù)的巧算練習(xí)題答案27.785221.766原式=(2-0.004)+(20-0.03)+(200-0.2)=222-(0.004+0.03+0.2)=221.766111109提示:仿上題.49.55103.25原式=1.1(1+3+9)+1.01(11+13+19)=1.125+1.0