珠心算直加直减练习题[60页]

直加直减练习题123456789107-7836-88-8227-97-688-759-989-9736-99-95123456789108-659-939-768-869-6562-79-9345-83-2825-61234567891018-963-79-9145-625-754-918-554-815-654-71234567891018-881-92-1835-753-663-94-3871-818-69-991234567891045-79-2-69-969-8518-79-7572-88-2-572-926-31234567891063-29-9417-76-5717-654-97-5681-79-877-66满五加练习题（四）123456789102333314324-137-5333-18-7623143-17-531234567891...