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Maths Formulas For Class 8 Chapter Wise Formulas Pdf Download: Are you looking for all the chapter wise formulas for class 8 maths, so you are on the right page. Here we have provided you all the class 8 maths chapter wise formulas that will help you in solving questions of maths.
We understand that the difficulty level, especially in the maths subject starts increasing from class 8, and many of us who are not good in maths, they find it very difficult to solve the maths questions, and even understand them. The best thing here is that don’t directly jump to the question and start solving it, but firstly understand the basics, means first you need to memorize all the formulas of that particular chapter.
Understanding the formula and then solving a lot of questions based on that formula will definitely help you in understanding the concept. The more you will practice questions using those formulas will help you in getting a good hold of the chapter.
Maths Formulas For Class 8 Chapter Wise Formulas Pdf Download
If you are studying in class 8 or are searching for important maths formulas for class 8, then this is the right place for you. Here we have provided you table wise all the class 8 maths formulas that will definitely help you in solving your class 8 Maths questions.
One of the difficult chapters that one find in class 8 maths is mensuration, but if you will have a clear idea of the formulas that what type of formula the question in demanding, and how to implement it, then it becomes one of the easiest chapters of maths. Only thing maths ask for is that you should remember all the important formulas and their implementation.
In this article, down below we have provided you all the chapter wise important Maths formulas for class 8. Go through them properly, practice as many questions as you can using that particular formula, and get the hold of the subject.
Rational Numbers Formulas for class 8
| Additive Identity/Role of Zero | a+0=a |
| Multiplicative Identity/Role of One | ax1=a |
| Reciprocal or Multiplicative Inverse | (a/b)x(b/a)=1 |
| Distributive Property | a(b+c)=ab+ac a(b-c)=ab-ac |
| Additive Inverse Of a/b = -a/b and vice versa | |
| Commutative Property of Addition | a+b=b+a |
| Commutative Property of Subtraction | a-b≠b-a |
| Commutative Property of Multiplication | axb=bxa |
| Commutative Property of Division | a/b≠b/a |
| Associative Property of Addition | (a+b)+c=a+(b+c) |
| Associative Property of Subtraction | (a-b)-c≠a-(b-c) |
| Associative Property of Multiplication | (axb)xc=ax(bxc) |
| Associative Property of Division | (a/b)/c≠a/(b/c) |
Algebraic Expressions Formulas for class 8
| (a + b)2 | a2 + 2ab + b2 |
| (a – b)2 | a2 – 2ab + b2 |
| (a + b) (a – b) | a2 – b2 |
| (x + a) (x + b) | x2 + (a + b)x + ab |
| (x + a) (x – b) | x2 + (a – b)x – ab |
| (x – a) (x + b) | x2 + (b – a)x – ab |
| (x – a) (x – b) | x2 – (a + b)x + ab |
| (a + b)3 | a3 + b3 + 3ab(a + b) |
| (a – b)3 | a3 – b3 – 3ab(a – b) |
Mensuration formulas for class 8
| Name of the Solid | Lateral / Curved Surface Area | Total Surface Area | Volume |
|---|---|---|---|
| Cuboid | 2h (l + b) | 2 (lb + bh + hl) | l × b × h |
| Cube | 4a2 | 6a2 | a3 |
| Right Prism | Perimeter of Base × Height | Lateral Surface Area + 2(Area of One End) | Area of Base × Height |
| Right Circular Cylinder | 2 (π × r × h) | 2πr (r + h) | πr2h |
| Right Pyramid | ½ (Perimeter of Base × Slant Height) | Lateral Surface Area + Area of the Base | ⅓ (Area of the Base) × Height |
| Right Circular Cone | πrl | πr (l + r) | ⅓ (πr2h) |
| Sphere | 4πr2 | 4πr2 | 4/3 (πr3) |
| Hemisphere | 2πr2 | 3πr2 | ⅔ (πr3) |
| Shapes | Area Formulas |
|---|---|
| Square | a2 |
| Rectangle | a × b |
| Circle | πr2 |
| Ellipse | πr1r2 |
| Triangle | ½(b × h) |
Probability formulas for class 8
| Probability | (Number of favourable outcomes)/(Total Number Of Outcomes) |
Profit And Loss formulas for class 8
| Profit, P | SP – CP; SP>CP |
| Loss, L | CP – SP; CP>SP |
| P% | (P/CP) x 100 |
| L% | (L/CP) x 100 |
| SP | {(100 + P%)/100} x CP |
| SP | {(100 – L%)/100} x CP |
| CP | {100/(100 + P%)} x SP |
| CP | {100/(100 – L%)} x SP |
| Discount | MP – SP |
| SP | MP -Discount |
Exponents And Powers formulas for class 8
| am an | am+n |
| am/an | am-n |
| (am)n | amn |
| am bm | (ab)m |
| am/bm | (a/b)m |
| a0 | 1 |
We hope that the content we have provided you in the article which is related to maths class 8 chapter wise formulas, it will be beneficial for you. In case you are having and confusion and wants to understand some formulas or want some more related stuff, then you may drop your queries in the comment box below. We will try to provide you with the best solution to your questions.