Math worksheet with problems on comparison, multiplication, and geometry, showing a student's work and corrections.
A close-up of a math worksheet with problems involving comparison, multiplication, and geometry. Problem 5 asks to compare 846 and 824 with a red "X" indicating an incorrect answer. Problem 6 asks to calculate the total miles walked by Curtis over 26 weeks at 3 miles per day, with the answer 546 written and checked. Problem 7 asks how many equal sides a square has. The worksheet is titled "Core Review K-4."