五年級數(shù)學(xué)異分母加減法專項練習(xí)題(最新整理)

1、分?jǐn)?shù)加減法專項練習(xí)姓名 ：成績：家長簽名： 教學(xué)目標(biāo)：1、使學(xué)生理解分?jǐn)?shù)加減法的意義，掌握分?jǐn)?shù)加減法法則2、通過練習(xí)加快學(xué)生計算簡單分?jǐn)?shù)加減的速度教學(xué)內(nèi)容：1、 同分母分?jǐn)?shù)相加減，分母不變，分子相加減。2、 異分母分?jǐn)?shù)相加減，先通分，再按同分母分?jǐn)?shù)加減法則計算。鞏固練習(xí)：1、口算（每題 1.5 分）3 - 1 =1 + 1 =1 - 1 =1 + 1（1）42367925 =10 - 9 =1 + 1 =8 - 3 =1 =（2）1093411111- 10115575（3）2-=6+ =+=+=1228888224（4）252 -=719939912126347351（5）1 7 =5 5

2、=10 10 =8 - 4 =211124（6）3 6 =5 8 =3 9 =71821142111（7） =5 =4353443（8）14 9 =5 7 1712525612412815174（9）6 11 =2 3=12 12 =9 9 =13351111（10）10 + 10 =8 + 8 =6 6 =3 + 4 =11211（11）2 3 =1 7 =2 + 6 =1 5 =815331593（12）6 + 6 =7 7 =8 + 8 =10 10 =4111111（13）1 9 =8 + 4 =3 4 =2 + 3 =（14）1 + 1 =4 + 5 =1 + 1 =5 1 =349

3、924662、遞等式計算：（能簡算的用簡便方法）（12 分）5 1 23 1 513 5 574786126761 3 27 ( 7 1)7 4 0.3558871093、列式計算25一根電線用去 米，用去的比剩下的短米，這根電線原來長多少米？（4 分）57“”“”at the end, xiao bian gives you a passage. minand once said, people who learn to learn are very happy people. in every wonderful life, learning is an eternal theme. as

4、 a professional clerical and teaching position, i understand the importance of continuous learning, life is diligent, nothing can be gained, only continuous learning can achieve better self. only by constantly learning and mastering the latest relevant knowledge, can employees from all walks of life keep up with the pace of enterprise development and innovate to meet the needs of the market. this document is also edited by my studio professionals, there may be