读罢贵刊今年第5期《借位减法及应用》和第7期《读者来信》对《借位减法及应用》一文的评述,倍受教益,现有感而发,谈几点感想。 一、拨珠时,向前位借1的表示方式。借1时,宜用算珠记数,不宜用脑子记数。借1在档上以悬珠表示。即:这颗算珠既上不靠梁,又下要与第二颗算珠相隔一点 Read the issue of your fifth issue of this year, “Subtraction and Application of Borrowing” and No. 7 “Reader Letters” on the “borrow subtraction and application of” a review of the article, much education, existing feelings, talk about a few thoughts. First, dial the beads, the way forward by 1 means. By 1:00, should count beads count, not with the brain count. By 1 in the stalls to beads said. That is, this bead is not only supported by the beam, but also separated by a second bead