Math Tutor Program for Youngster Authors Tom Bingel Publication SUM Publication Details Volume: 4 Issue: 5 Date May 1986 Pages 6-8 Read the article See all articles from SUM v4 n5 Program to quiz children 7-10 on addition and subtraction at different levels. Products Downloadable Media Related Articles Tags SUM, TS 1000, Type-in program, ZX81 People Tom Bingel