Each addition fact is a prerequisite skill for subtraction algorithms. Every chapter in the Basic Facts for Subtraction book will link addition and subtraction facts into fact families which show the inverse relationship between the two operations.
Revision pages have been provided after the Fact Families for 8, the Fact Families for 5 and the Fact Families for 2. These revision pages are designed for cumulative review (to maintain previous learning) and as a discrimination task (so that students do not become ‘stuck’ on one set of facts in isolation). 246 pages