A comprehensive math course designed for third grade students to build foundational skills in numbers, operations, geometry, and data analysis.
Always look over your math work to catch mistakes. You can use the opposite operation (like subtraction to check addition) or estimate the answer to see if it makes sense. Checking your work gives you confidence and helps you learn from errors.
After adding 456 + 123, subtract 123 from your answer to check.
Look back at each step in a word problem to make sure nothing was missed.