小学3个三位数加减法计算题 300道

小学三年级三位数加减法专项练习（300道）一、写在前面三年级是整数加减法学习的关键阶段，三位数加减法不仅是两位数加减法的延伸，更是后续学习多位数运算、小数运算的重要基础。扎实掌握这部分内容，能有效提升孩子的计算速度与准确性，培养良好的数学思维习惯。本次专项练习精心设计了300道三位数加减法题目，涵盖不同难度层次，旨在帮助孩子们通过系统练习，熟练掌握计算方法，攻克计算难关。二、计算要点回顾在开始练习之前，我们先来简要回顾一下三位数加减法的核心计算要点，这将帮助孩子们更准确、高效地完成练习：*加法计算法则：相同数位对齐，从个位加起，哪一位上的数相加满十，就向前一位进一。注意，进位的数字要记得加上。*减法计算法则：相同数位对齐，从个位减起，哪一位上的数不够减，就从前一位退一当十，和本位上的数合并在一起，再减。退位后，前一位的数字要记得减去一。三、专项练习题（一）三位数加法（150道）1.不进位加法（50道）1.234+123=2.345+213=3.156+321=4.412+536=5.205+364=6.561+237=7.328+451=8.145+234=9.623+154=10.432+356=11.217+562=12.354+435=13.503+286=14.168+721=15.275+324=16.481+318=17.306+593=18.612+276=19.534+345=20.287+412=21.193+605=22.425+354=23.567+221=24.318+571=25.243+654=26.405+384=27.572+216=28.361+428=29.185+714=30.239+540=31.456+332=32.517+261=33.382+407=34.629+150=35.208+671=36.473+325=37.584+215=38.336+453=39.157+742=40.291+508=41.438+341=42.529+260=43.307+582=44.645+134=45.252+637=46.419+370=47.593+206=48.374+415=49.166+723=50.225+564=2.一次进位加法（50道）1.256+147=2.368+253=3.473+158=4.189+324=5.237+365=6.548+263=7.319+482=8.654+177=9.285+346=10.436+285=11.517+394=12.362+459=13.278+543=14.195+626=15.483+329=16.569+242=17.327+485=18.248+563=19.615+196=20.374+437=21.528+283=22.496+315=23.267+545=24.389+422=25.573+238=26.418+393=27.295+516=28.356+455=29.537+274=30.468+343=31.289+522=32.376+445=33.518+293=34.427+384=35.259+552=36.394+417=37.563+248=38.475+336=39.238+573=40.349+462=41.526+285=42.487+324=43.275+536=44.368+443=45.593+218=46.439+372=47.264+547=48.385+426=49.547+264=50.419+392=3.连续进位加法（50道）1.368+255=2.476+357=3.584+269=4.297+536=5.648+175=6.359+463=7.527+385=8.438+486=9.275+548=10.386+347=11.593+229=12.467+356=13.328+594=14.659+163=15.485+337=16.536+287=17.374+458=18.296+515=19.618+193=20.457+365=21.589+223=22.346+477=23.495+316=24.568+254=25.387+435=26.629+182=27.475+346=28.538+284=29.396+415=30.267+556=31.574+249=32.483+338=33.359+462=34.617+194=35.528+293=36.439+382=37.286+535=38.375+446=39.594+217=40.468+353=41.517+295=42.396+425=43.648+173=44.475+347=45.536+286=46.384+438=47.297+515=48.569+252=49.418+393=50.357+465=（二）三位数减法（150道）1.不退位减法（50道）1.567-234=2.789-345=3.654-123=4.876-543=5.987-654=6.456-213=7.321-110=8.543-232=9.765-432=10.632-311=11.854-523=12.943-621=13.521-310=14.678-456=15.735-214=16.891-560=17.486-153=18.597-364=19.658-237=20.719-408=21.842-531=22.935-624=23.569-127=24.683-341=25.795-463=26.826-515=27.914-602=28.537-205=29.648-316=30.759-427=31.861-530=32.972-641=33.583-251=34.694-362=35.715-403=36.826-514=37.937-605=38.548-216=39.659-327=40.771-440=41.882-551=42.993-662=43.512-301=44.623-412=45.734-523=46.845-634=47.956-745=48.578-267=49.689-378=50.791-480=2.一次退位减法（50道）1.543-251=2.678-394=3.765-482=4.854-563=5.943-671=6.632-351=7.721-430=8.810-529=9.509-218=10.698-307=11.787-496=12.876-585=13.965-674=14.554-263=15.643-352=16.732-441=17.821-530=18.910-629=19.598-307=20.687-396=21.776-485=22.865-574=23.954-663=24.531-240=25.620-339=26.709-418=27.898-607=28.987-696=29.546-255=30.635-344=31.724-433=32.813-522=33.902-611=34.587-296=35.676-385=36.765-474=37.854-563=38.943-652=39.521-230=40.610-329=41.799-508=42.888-597=43.977-686=44.563-272=45.652-361=46.741-450=47.830-549=48.919-628=49.508-217=50.697-406=3.连续退位减法（50道）1.543-276=2.