Grade 4 | Free Common Core Math Worksheets | Biglearners 4.OA.A Use the four operations with whole numbers to solve problems. 4.OA.A.1. Interpret a multiplication equation as a comparison, e.g., interpret 35 = 5 × 7 as a statement that 35 is 5 times as many as 7 and 7 times as many as 5. Represent verbal statements of multiplicative comparisons as multiplication equations.