Learning to calculate square roots quickly can make a huge difference in your maths exams. Whether you're doing algebra, geometry, or other topics, being fast and accurate with square roots gives ...

Example: To find √50, start with √49 = 7. Use this formula: √50 ≈ 7 + (50-49)/ (2×7) = 7 + 1/14 ≈ 7.07 The formula: √ (a+difference) ≈ √a + difference/ (2×√a) This gives you ...