IXL | Learn grade 3 math IXL offers hundreds of grade 3 math skills to explore and learn! Not sure where to start? Go to your personalized Recommendations wall to find a skill that looks interesting, or select a skill plan that aligns to your textbook, state standards, or standardized test. A. Numbers and comparing. 1. Skip-counting by twos 2. Skip-counting by fives 3. Skip-counting by tens 4. Skip-counting by …