分数加减法混合运算练习题 200题.doc

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1、分数加减法混合运算练习题200题3/4+1/5=4/53/4-1/5=11/205/6+2/9=19/185/6-2/9=11/182/3+3/5=19/152/3-3/5=1/156/7+1/2=19/146/7-1/2=5/142/3+1/6=5/61/3+1/4=7/121/3-1/4=1/121/5+1/7=12/351/5-1/7=2/351/4+1/9=13/361/4-1/9=5/361/8+1/9=17/721/8-1/9=1/721/10+7/9=79/905/7-1/6=23/421-5/9=4/9

2、1/5+3/8=23/403/4+1/5=19/202/3-3/5=1/51-2/5=3/55/8-1/9=37/721/10-1/20=1/201/6+3/8=13/245/9-1/2=1/182/3+1/4=11/121/2+1/3=5/65/6+1/18=8/93/5-1/3=4/1517/15-1/3=4/511/12-2/3=1/41/2-1/4=1/41/7-1/8=1/561/3-1/9=2/95/6-1/2=1/31-2/3=1/35/8-1/6=11/241/3+1/6=1/23/4-1/2=1/41

3、/5+1/8=13/405/6+4/9=23/185/9-2/5=7/453/7+5/2=41/145/8+9/10=61/4011/12-8/15=23/601/4+1/6=5/121/4-1/6=1/121-6/7=1/711/12-2/3=1/43/10+2/5=7/107/8-1/4=5/83/4+5/12=7/63/5-3/7=6/355/4-5/12=5/61/5-1/9=4/451/3-1/8=5/2411/6-2/9=29/181/5+1/9=14/451-2/5=3/57/4+1/7=53/281-1

4、/9=8/92/3-2/7=8/215/6+1/2=4/34/3-3/4=7/121-4/7=3/74/3+3/2=17/65/9+18/5=5/63/8+7/10+5/8=17/107/8-(1/8+3/4)=04/7+1/6-4/7=1/62-7/9-2/9=13/5+7/8+2/5=15/87/9-(1/9+1/3)=1/31/4+(2/5+3/4)=7/55/6-3/10+1/6-7/10=03/4+1/6-2/3=1/47/8-1/4+4/9=77/721-1/3+2/7=20/211/2+4/5-3/10=

5、15/6-(2/3-1/9)=5/189/10-(3/4+1/8)=1/401/2+2/3-3/4=5/127/8-1/6+1/4=23/241-(3/4-2/9)=17/369/10-1/5-1/2=1/51/4+3/7+1/2=33/287/8-(2/3+1/6)=1/241-(1/3+3/5)=1/151/2+1/4+1/3=13/127/8+1/4+1/2=5/85/7-(4/7+1/9)=2/631-1/4-1/2=1/43/4-1/6-1/3=1/43/10+1/4+2/5=19/202/3+1/6+1/1

6、2=11/121-1/4-2/5=7/201/2+1/9+1/12=25/36 (注：/前面的为分子,后面的为分母,如1/2是二分之一)