Prime or Composite Numbers 2-20

by Marcia Murphy

Price: 200 points or $2 USD

Subjects: math,mathElementary,operationsAndAlgebraicThinking,factorsAndMultiples

Grades: 4,5

Description: Card number 1 gives the definitions for prime and composite numbers plus a few examples. On cards 2-20 students are given 1 and 2 digit numbers up to 20. They must decide if each number is prime or composite. Students click on the correct answer.