五年级数学异分母加减法专项练习题(最新整理)

1、分数加减法专项练习姓名 ：成绩：家长签名： 教学目标：1、使学生理解分数加减法的意义，掌握分数加减法法则2、通过练习加快学生计算简单分数加减的速度教学内容：1、 同分母分数相加减，分母不变，分子相加减。2、 异分母分数相加减，先通分，再按同分母分数加减法则计算。巩固练习：1、口算（每题 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、递等式计算：（能简算的用简便方法）（12 分）5 1 23 1 513 5 574786126761 3 27 ( 7 1)7 4 0.3558871093、列式计算25一根电线用去 米，用去的比剩下的短米，这根电线原来长多少米？（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