Mastering mathematics from Class 6 through Class 10 requires more than memorization - it demands a clear understanding of why each formula works. One of the most common reasons students lose marks in CBSE board exams is applying the wrong formula under time pressure, especially in chapters like Surface Areas & Volumes and Quadratic Equations where multiple formulas coexist. This curated collection of CBSE Class 6 to 10 Maths important formulas covers every chapter across all five classes, organized topic-by-topic so you can revise efficiently before tests. Whether you are a Class 9 student struggling with Heron's Formula or a Class 10 student confused between the mean, median, and mode formulas in Statistics, EduRev's formula sheets give you exactly what you need in a concise, exam-ready format. Use the table below to jump directly to the class and chapter you need.
Chapter-wise Important Formulas for Class 6 Maths
Class 6 Maths under the new NCERT Ganita Prakash framework introduces foundational concepts that directly support every higher-level topic students will encounter later. A particularly tricky area for beginners is negative integers in "The Other Side of Zero," where students often confuse the direction of movement on a number line. The formula sheets available on EduRev for Class 6 Maths cover geometry basics such as lines and angles, perimeter and area relationships, fraction operations, and pattern recognition. Symmetry formulas - including the number of lines of symmetry for regular polygons - are also included, helping students avoid the frequent error of counting non-existent axes. These chapter-wise formula resources are structured to complement classroom learning, giving students a precise reference point during revision rather than requiring them to search through entire textbook chapters.
Chapter-wise Important Formulas for Class 7 Maths
Class 7 Maths builds algebraic thinking and deepens geometric reasoning, making it a critical year for developing problem-solving habits. Students frequently struggle with algebraic expressions using letter-numbers, particularly when substituting values into multi-step expressions - a skill that directly underpins Class 9 Polynomials. EduRev's formula sheets for Class 7 cover all chapters from large numbers and arithmetic expressions to intersecting lines, congruence (geometric twins), and operations with integers. The chapter "Finding the Unknown" introduces equation-solving concepts that reappear in Class 10's pair of linear equations, so having a solid formula reference early on pays long-term dividends. Chapters on decimals ("A Peek Beyond the Point" and "Another Beyond the Point") are particularly formula-dense, and the EduRev sheets distill these into clear, concise rules students can review quickly before assessments.
Chapter-wise Important Formulas for Class 8 Maths
Class 8 Maths introduces some of the most formula-intensive topics in the entire secondary school curriculum. The Baudhāyana-Pythagoras Theorem chapter, for example, requires students to correctly identify the hypotenuse - a step that is deceptively simple but consistently mishandled in multi-step problems. Similarly, "We Distribute, Yet Things Multiply" covers algebraic identities whose incorrect application is one of the top error sources in Class 9 and 10 algebra. EduRev's Class 8 formula sheets span squares and cubes, powers and exponents, quadrilateral properties, proportional reasoning, rational numbers ("Fractions in Disguise"), area formulas, and coordinate graph relationships. Having these formulas in a single accessible document means students spend revision time applying concepts rather than hunting through textbook pages for the right expression or identity.
Chapter-wise Important Formulas for Class 9 Maths
Class 9 Maths is where CBSE students first encounter board-style examination patterns, making formula accuracy absolutely non-negotiable. A very common error at this level is misapplying the surface area formula for a hemisphere versus a sphere - students forget to account for the circular base, costing them marks in Surface Areas & Volumes. EduRev's Class 9 formula sheets cover all twelve chapters of the NCERT syllabus: from irrational number operations in the Number System, through coordinate geometry sign conventions, to statistical measures including mean, median, and mode. The Heron's Formula sheet is especially useful because it also presents the standard triangle area formula alongside it, helping students choose the correct approach depending on what information a problem provides. All formula sheets are structured to match the NCERT chapter sequence.
Chapter-wise Important Formulas for Class 10 Maths
Class 10 Maths is the most formula-heavy year in the CBSE secondary school cycle, and a single forgotten formula can directly affect board exam scores. The discriminant formula in Quadratic Equations (b² - 4ac) is one of the highest-stakes formulas at this level - students regularly confuse the conditions for real versus distinct roots, leading to entirely wrong conclusions about a problem. EduRev's Class 10 formula sheets cover all fourteen chapters including Arithmetic Progressions (the nth term and sum formulas are both required), Trigonometric identities, coordinate geometry distance and section formulas, and probability. The Trigonometry sheet is particularly comprehensive, listing all standard angle values for sin, cos, and tan alongside the core identities, which students otherwise have to reconstruct from memory under exam pressure. All sheets are accessible on EduRev.
Formula sheets serve a fundamentally different purpose than textbooks or notes - they eliminate the cognitive overhead of locating information so students can focus entirely on applying it. In CBSE Maths, the volume of formulas increases sharply at each class level: Class 6 introduces around a dozen core geometric and arithmetic formulas, while Class 10 requires students to recall and deploy well over fifty distinct formulas across fourteen chapters. Research into exam errors consistently shows that students who revise using condensed formula references - rather than re-reading full chapters - retain procedural knowledge more reliably under timed conditions. On EduRev, each formula sheet is chapter-specific and aligned precisely to the current NCERT syllabus, meaning there are no outdated formulas from previous editions that could confuse students preparing for today's CBSE examinations.
Across Classes 6 to 10, the CBSE Maths curriculum builds in a deliberate spiral: concepts like fractions introduced in Class 6 reappear as rational numbers in Class 8 and then as real numbers in Class 9. This means a gap in formula knowledge at one level compounds into a larger gap two classes later. For example, students who are unclear on the properties of parallel lines and transversals in Class 7 frequently make errors in the Lines & Angles and Triangle theorems of Class 9. EduRev's formula sheets for Classes 6 through 10 are designed with this progression in mind - each sheet highlights not just the formula itself but the precise conditions under which it applies, reducing the most common error of using a valid formula in an invalid context.
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