Head count : a simple, straight-forward resource to help pupils learn quick and accurate mental recall of basic number facts.
Salisbury : MPC Enterprises,
c1997.
Caption title.
bk. 1. Numbers to 10, add 1-9 -- bk. 2. Numbers to 10, subtract 1-9 -- bk. 3. Numbers to 100, multiply by 2-10 -- bk. 4. Numbers to 100, divide by 2-10.