🧮 口算题生成器（小学口算练习题打印）Math Worksheet Generator
一键生成小学口算练习题：10/20/100/1000 以内加减法、进位退位、表内乘除、有余数除法、两位数乘一位数、三数连加减，可设题数、每行列数、填空位置（求结果或求加数），附答案页，下载 A4 PDF 或直接打印，每次出题都不一样。Generate primary-school mental-math worksheets: addition and subtraction within 10/20/100/1000, carrying and borrowing, times tables, division with remainders, 2-digit × 1-digit and 3-number chains — set the count, columns and blank position, include an answer key and download an A4 PDF or print. New problems every time.
使用说明与常见问题How-to & FAQ
「口算题生成器（小学口算练习题打印）」是什么？What is the Math Worksheet Generator?
一键生成小学口算练习题：10/20/100/1000 以内加减法、进位退位、表内乘除、有余数除法、两位数乘一位数、三数连加减，可设题数、每行列数、填空位置（求结果或求加数），附答案页，下载 A4 PDF 或直接打印，每次出题都不一样。Generate primary-school mental-math worksheets: addition and subtraction within 10/20/100/1000, carrying and borrowing, times tables, division with remainders, 2-digit × 1-digit and 3-number chains — set the count, columns and blank position, include an answer key and download an A4 PDF or print. New problems every time.
如何使用「口算题生成器（小学口算练习题打印）」？How do I use the Math Worksheet Generator?
点一个年级预设（如“20以内进退位”），或自己勾选运算和范围，设置题数和每行几题，点“重新出题”预览；满意后点“下载 PDF（A4）”或“打印”。勾选“附答案页”会在最后附上答案，方便家长批改。Pick a preset (e.g. Within 20 carry) or set operations and ranges, choose count and columns, press Generate to preview, then Download PDF (A4) or Print. Answer key pages are added at the end for checking.
减法会出现负数吗？Can subtraction give negative numbers?
不会。减法保证被减数不小于减数，加法结果不超过设定范围，除法默认整除（勾选“有余数除法”才出余数题），适合低年级。No. Subtraction never goes negative, sums stay within the range, and division is exact unless you choose division with remainder.
一张 A4 纸放多少题？How many problems fit on one A4 page?
每页 20 行，4 列时每页 80 题、5 列时 100 题；题数更多会自动分页。20 rows per page: 80 problems with 4 columns, 100 with 5; more problems flow onto extra pages.
能出括号填空题吗？Can it make fill-in-the-blank problems?
可以：把“填空位置”改为“随机填空”，会出 3+( )=8 这样的求加数、求因数题。Yes — set Blank to Mixed for problems like 3 + ( ) = 8.
「口算题生成器（小学口算练习题打印）」免费吗？文件会上传吗？Is the Math Worksheet Generator free? Are my files uploaded?
「口算题生成器（小学口算练习题打印）」完全免费，无需注册。你输入的内容只保存在本机浏览器里（方便下次继续），不会上传到任何服务器。The Math Worksheet Generator is free with no sign-up. What you enter stays in this browser only (so you can continue later) and is never uploaded to any server.