เลขยกกำลังสอง แผ่นงานสำหรับ ชั้นประถมศึกษาปีที่ 7

Review perfect squares through exponent notation, then connect them to square roots and algebraic expressions. A useful prompt is: “If x² = 144, what values could x have?” This moves students beyond recall into reasoning about positive and negative solutions.

Mix rapid recognition of perfect squares with square-root problems, missing values in equations, and area applications. Students can also classify expressions such as 3², 3 × 2, and √9 to clarify how the operations differ.

Students often confuse squaring with doubling, overlook the difference between √49 and 49², or forget that both 7 and −7 have a square of 49. Negative bases should be written with parentheses so students can distinguish (−7)² from −7².

Host it as a digital quiz on Wayground for immediate classroom practice, or print the PDF for paper-based work. A complete answer key accompanies every worksheet, and teachers can grade printed submissions by scanning or capturing them with the Wayground for Teachers app.

Common Core builds from whole-number exponents toward equations, expressions, and work with rational numbers. Recognizing that 144 is 12² helps students simplify square-root expressions and solve equations involving a squared variable.

Students who need support can receive a version with larger type or a dyslexia-friendly font and begin with squares through 12². For enrichment, include negative bases, algebraic expressions, and problems that require locating a number between two consecutive perfect squares.

Grade 7 students should recognize common perfect squares, interpret exponent notation, connect squares with square roots, and apply the relationship in algebra and area problems. The focus shifts from simply memorizing values to using them accurately in unfamiliar contexts.