分数加减法练习题500道

分数加减法练习题500道分数加减法是小学数学学习的重要基础，也是进一步学习更复杂数学知识的必备技能。扎实掌握分数加减法的运算规则，能够有效提升数学思维的敏捷性与准确性。以下为同学们精心准备了500道分数加减法练习题，涵盖了同分母、异分母、带分数等多种类型，希望通过系统练习，帮助大家熟练掌握运算技巧，轻松应对各类分数计算问题。一、基础热身：同分母分数加减法同分母分数相加减，分母不变，只把分子相加减，结果能约分的要约成最简分数。（一）同分母分数加法1.1/5+2/5=2.3/7+2/7=3.1/8+5/8=4.2/9+4/9=5.3/10+6/10=6.1/4+1/4=7.5/12+3/12=8.2/15+7/15=9.4/11+5/11=10.1/6+4/6=11.3/13+8/13=12.5/14+5/14=13.2/16+11/16=14.7/17+8/17=15.4/18+10/18=16.1/3+1/3=17.5/20+13/20=18.6/21+9/21=19.3/22+17/22=20.8/23+11/23=21.5/24+17/24=22.7/25+13/25=23.2/26+21/26=24.9/27+15/27=25.4/28+20/28=26.1/9+7/9=27.6/30+21/30=28.8/31+19/31=29.5/32+25/32=30.10/33+19/33=31.3/34+29/34=32.7/35+21/35=33.12/36+21/36=34.4/37+31/37=35.9/38+25/38=36.6/39+27/39=37.11/40+25/40=38.5/41+34/41=39.13/42+23/42=40.8/43+33/43=41.7/44+35/44=42.15/45+27/45=43.10/46+33/46=44.9/47+35/47=45.12/48+33/48=46.14/49+31/49=47.11/50+37/50=48.3/51+45/51=49.16/52+33/52=50.17/53+33/53=（二）同分母分数减法1.3/5-1/5=2.5/7-2/7=3.7/8-3/8=4.6/9-4/9=5.9/10-3/10=6.3/4-1/4=7.11/12-5/12=8.13/15-7/15=9.9/11-5/11=10.5/6-1/6=11.12/13-3/13=12.14/15-5/15=13.15/16-11/16=14.17/18-8/18=15.16/19-10/19=16.2/3-1/3=17.19/20-5/20=18.20/21-9/21=19.22/23-17/23=20.24/25-17/25=21.27/28-15/28=22.29/30-13/30=23.31/32-21/32=24.33/34-29/34=25.35/36-21/36=26.37/38-25/38=27.39/40-25/40=28.41/42-23/42=29.43/44-35/44=30.45/46-33/46=31.47/48-33/48=32.49/50-31/50=33.51/52-33/52=34.53/54-37/54=35.55/56-39/56=36.57/58-41/58=37.59/60-43/60=38.61/62-45/62=39.63/64-47/64=40.65/66-49/66=41.67/68-51/68=42.69/70-53/70=43.71/72-55/72=44.73/74-57/74=45.75/76-59/76=46.77/78-61/78=47.79/80-63/80=48.81/82-65/82=49.83/84-67/84=50.85/86-69/86=（三）同分母分数加减混合运算1.1/5+2/5-1/5=2.3/7+5/7-2/7=3.7/8-3/8+1/8=4.6/9-4/9+2/9=5.9/10-3/10-2/10=6.3/4+1/4-2/4=7.11/12-5/12+3/12=8.13/15+7/15-11/15=9.9/11+5/11-9/11=10.5/6-1/6+1/6=11.2/3+2/3-1/3=12.4/5-1/5+2/5=13.6/7+3/7-5/7=14.8/9-5/9+4/9=15.10/11+7/11-12/11=16.1/2+1/2-1/2=17.3/5+4/5-2/5=18.5/7-2/7+3/7=19.7/9+5/9-8/9=20.9/11-6/11+4/11=21.11/13+8/13-15/13=22.13/15-8/15+5/15=23.15/17+10/17-19/17=24.17/19-12/19+7/19=25.19/21+14/21-25/21=二、进阶提升：异分母分数加减法异分母分数相加减，先通分，化成同分母分数，再按照同分母分数加减法的法则进行计算，结果同样需要约成最简分数。（一）异分母分数加法1.1/2+1/3=2.1/4+1/5=3.2/3+1/6=4.3/5+1/4=5.1/6+3/8=6.2/5+3/7=7.3/4+1/7=8.1/3+3/5=9.5/6+1/4=10.2/7+3/8=11.3/8+1/6=12.4/9+2/5=13.5/10+1/3=14.1/12+5/6=15.3/7+5/9=16.4/11+1/2=17.5/12+3/8=18.7/15+1/5=19.2/9+5/12=20.5/7+1/3=21.3/10+4/15=22.7/12+1/8=23.5/14+3/7=24.4/15+5/12=25.1/8+5/12=26.3/10+7/15=27.5/16+3/8=28.7/18+2/9=29.4/21+3/7=30.5/22+1/11=31.3/25+2/5=32.7/30+1/6=33.5/28+3/14=34.9/32+5/16=35.7/36+1/4=36.5/40+3/8=37.11/42+5/14=38.8/45+1/5=39.7/50+3/25=40.13/54+5/18=41.5/16+7/24=42.7/20+9/25=43.11/24+5/18=44.13/30+4/15=45.9/32+7/24=46.5/33+3/22=47.11/36+7/27=48.13/40+9/32=49.7/44+5/33=50.15/56+11/42=51.3/7+5/12=52.5/8+3/10=53.7/9+1/6=54.2/11+5/7=55.4/13+3/4=56.5/14+8/15=57.7/16+5/12=58.3/17+5/9=59.8/19+3/7=60.5/21+7/16=61.11/23+3/10=62.7/24+5/14=63.9/25+7/18=64.11/28+5/16=65.13/32+7/20=66.5/33+7/24=67.15/34+9/26=68.7/35+11/30=69.17/36+5/28=70.19/40+7/30=（二）异分母分数减法1.1/2-1/3=2.3/4-1/5=3.5/6-1/3=4.4/5-2/3=5.7/8-3/4=6.5/7-1/2=7.2/3-1/4=8.5/9-1/6=9.3/8-1/5=10.7/10-2/5=11.4/7-1/3=12.5/9-2/7=13.3/5-3/8=14.5/8-1/6=15.7/12-1/4=16.11/15-3/10=17.5/14-1/7=18.8/15-2/9=19.7/18-1/6=20.10/21-3/14=21.5/22-1/11=22.7/24-1/8=23.9/25-2/15=24.11/27-4/9=25