Times Tables - 1 to 20 (giant Size) by Armadillo PAPERBACK 9781861474735
ISBN-13: 9781861474735. by Armadillo. Author: Armadillo. This book includes instant answer number matrix chart. 2 X 4 = 8. 3 X 9 = 27. 7 X 17 = 119. It is a lively, accessible and effective instructional tool.