“Add & Subtract within 20: 1.OA.C.6” has been added to your cart. View cart Remove item Thumbnail image Product Price Quantity Subtotal × Add & Subtract within 20: 1.OA.C.6 $3.95 Add & Subtract within 20: 1.OA.C.6 quantity $3.95 Coupon: Apply coupon Update cart You may be interested in… Adding Three Numbers: Word Problems 1.OA.A.2 $3.95 Add to cart Fact Families, Make Ten, Doubles: Commutative & Associative 1.OA.B.3 $3.95 Add to cart Subtraction as an Unknown Addend Problem: 1.OA.B.4 $3.95 Add to cart Word Problems Addition & Subtraction: 1.OA.A.1 $3.95 Add to cart Cart totals Subtotal $3.95 Total $3.95 Proceed to checkout