Children can practice subtracting numbers 0–10 with this subtraction flash card set. Deck of 60 double-sided cards contains 120 practice problems. Children can practice with parents or by themselves. Great for meeting Common Core memorization and fluency requirements. Box measures 3.17" wide x 4.66" high x 1.06" deep (8.05 cm wide x 11.84 cm high x 2.69 cm deep). Flash cards measure 3.125" wide x 4.625" high (7.94 cm wide x 11.75 cm high). Grades K–2.