Subtraction Flash Cards: Teach subtraction with numbers to 10, to 20 and to 100. 3 flashcard sets, 162 cards. Ages 5+.

Key Features :

i : This value pack of flash cards includes 3 sets of 54 cards for teaching subtraction
ii : Covers subtraction under 10, under 20 and under 100
iii : Visual arrays are provided to help children see the mathematical relationships
iv : Teaches fast, automatic recall
v : A perfect activity for independent or guided learning