Collins mental maths: ages 6-7
Mental maths
- London: Collins, 2011
- 48 p.; 30 cm.
978-0-00-745790-8
Mental arithmetic--Study and teaching (Elementary)
Mathematics --Study and teaching (Elementary)
513.92
978-0-00-745790-8
Mental arithmetic--Study and teaching (Elementary)
Mathematics --Study and teaching (Elementary)
513.92