VBA实现的自动生成乘法计算式，给小朋友乘法练习。-VBA to achieve the automatic generation of the multiplication formula, for the children to practice multiplication.

小学出题-算式生成器，随机生成指定题数量、数字限额、指定运算符随机出题，时间既定，答案二维码扫一扫即可看到。(Primary school problem - Calculation generator, randomly generated number of designated questions, number limit, designated operator random problem, time set, two dimensional scanning of the answ