小学一年级20以内加减法口算题400道题

亲爱的小朋友们，口算能力是数学学习的基础，就像盖房子需要坚实的地基一样。熟练掌握20以内的加减法，能让你们在今后的数学学习中更加轻松自如。下面为大家准备了四百道20以内加减法口算题，每天坚持练习，相信你们的口算速度和准确率一定会大大提高！一、20以内加法口算题（一）不进位加法（100道）1.1+2=2.3+4=3.5+3=4.2+6=5.4+5=6.7+1=7.6+2=8.3+5=9.8+0=10.2+7=11.5+4=12.1+8=13.6+3=14.4+4=15.7+2=16.3+3=17.5+2=18.8+1=19.2+2=20.4+3=21.1+5=22.6+0=23.3+6=24.7+3=25.5+5=26.2+4=27.8+2=28.4+2=29.1+7=30.6+4=31.3+1=32.5+1=33.7+4=34.2+3=35.8+3=36.4+1=37.1+3=38.6+5=39.5+6=40.2+5=41.7+5=42.3+7=43.8+4=44.1+4=45.4+6=46.6+1=47.5+7=48.2+1=49.7+6=50.3+2=51.8+5=52.1+6=53.4+7=54.6+6=55.5+0=56.2+8=57.7+7=58.3+8=59.8+6=60.1+9=61.4+8=62.6+7=63.5+8=64.2+9=65.7+8=66.3+9=67.8+7=68.4+9=69.6+8=70.5+9=71.7+9=72.8+8=73.9+0=74.9+1=75.0+9=76.1+0=77.0+8=78.2+0=79.0+7=80.3+0=81.9+2=82.8+9=83.9+3=84.9+4=85.9+5=86.9+6=87.9+7=88.9+8=89.9+9=90.0+0=91.1+1=92.0+1=93.0+2=94.0+3=95.0+4=96.0+5=97.0+6=98.7+0=99.8+1=100.5+5=（二）进位加法（100道）1.9+2=2.8+3=3.7+4=4.6+5=5.5+6=6.4+7=7.3+8=8.2+9=9.9+3=10.8+4=11.7+5=12.6+6=13.5+7=14.4+8=15.3+9=16.9+4=17.8+5=18.7+6=19.6+7=20.5+8=21.4+9=22.9+5=23.8+6=24.7+7=25.6+8=26.5+9=27.9+6=28.8+7=29.7+8=30.6+9=31.9+7=32.8+8=33.7+9=34.9+8=35.8+9=36.9+9=37.10+1=38.10+2=39.10+3=40.10+4=41.10+5=42.10+6=43.10+7=44.10+8=45.10+9=46.1+10=47.2+10=48.3+10=49.4+10=50.5+10=51.6+5=52.7+4=53.8+3=54.9+2=55.6+4=56.7+3=57.8+2=58.9+1=59.7+5=60.8+4=61.9+3=62.8+5=63.9+4=64.9+5=65.5+7=66.4+8=67.3+9=68.2+11=69.3+8=70.4+7=71.5+6=72.6+5=73.7+4=74.8+3=75.9+2=76.8+4=77.7+5=78.6+6=79.5+7=80.4+8=81.3+9=82.9+6=83.8+5=84.7+6=85.6+7=86.5+8=87.4+9=88.7+8=89.8+6=90.9+7=91.6+8=92.5+9=93.8+7=94.7+9=95.9+8=96.8+8=97.9+9=98.6+9=99.7+7=100.8+9=二、20以内减法口算题（一）不退位减法（100道）1.5-2=2.7-3=3.9-4=4.6-1=5.8-5=6.10-3=7.12-1=8.11-0=9.13-2=10.14-3=11.15-4=12.16-5=13.17-6=14.18-7=15.19-8=16.20-10=17.9-0=18.8-2=19.7-4=20.6-3=21.5-1=22.4-4=23.3-2=24.2-1=25.10-5=26.11-1=27.12-2=28.13-3=29.14-4=30.15-5=31.16-6=32.17-7=33.18-8=34.19-9=35.10-1=36.10-2=37.10-4=38.10-6=39.10-7=40.10-8=41.10-9=42.11-2=43.11-3=44.11-4=45.11-5=46.11-6=47.11-7=48.11-8=49.11-9=50.12-3=51.12-4=52.12-5=53.12-6=54.12-7=55.12-8=56.12-9=57.13-4=58.13-5=59.13-6=60.13-7=61.13-8=62.13-9=63.14-5=64.14-6=65.14-7=66.14-8=67.14-9=68.15-6=69.15-7=70.15-8=71.15-9=72.16-7=73.16-8=74.16-9=75.17-8=76.17-9=77.18-9=78.5-0=79.6-2=80.7-5=81.8-3=82.9-5=83.10-0=84.12-0=85.14-1=86.16-2=87.18-3=88.20-5=89.19-1=90.17-2=91.15-3=92.13-1=93.11-10=94.13-10=95.15-10=96.17-10=97.19-10=98.20-2=99.20-3=100.20-4=（二）退位减法（100道）1.11-2=2.12-3=3.13-4=4.14-5=5.15-6=6.16-7=7.17-8=8.18-9=9.11-3=10.12-4=11.13-5=12.14-6=13.15-7=14.16-8=15.17-9=16.11-4=17.12-5=18.13-6=19.14-7=20.15-8=21.16-9=22.11-5=23.12-6=24.13-7=25.14-8=26.15-9=27.11-6=28.12-7=29.13-8=30.14-9=31.11-7=32.12-8=33.13-9=34.11-8=35.12-9=36.11-9=37.12-3=38.13-4=39.14-5=40.15-6=41.16-7=42.17-8=43.18-9=44.13-5=45.14-6=46.15-7=47.16-8=48.17-9=49.14-7=50.15-8=51.16-9=52.15-9=53.10-1=54.10-2=55.10-3=56.10-4=57.