NCERT-class-8-maths-chapter-1-exercise-1.1

Ncert Class 8 Maths Chapter 1 exercise 1.1 NCERT solutions for class 8 maths| Chapter 1 Rational numbers  A  detailed and step-wise solutions to all the questions at the end of the chapter from the NCERT Maths book   are given below: Ncert-class-8-maths-chapter-1-exercise-1.1 1. Using appropriate properties find (i) Sol.    =        (by commutativity) =            (by distributivity) = = =  (ii)   Sol.                       (by commutativity) = =  = = = 2. Write the additive inverse of each of the following:  (i) Sol.   is …

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“What is L in Roman numbers”

“What is L in Roman numbers” Roman numbers  are the letters used by the Romans for the representation of cardinal numbers . They used 7 letters to write the Roman numerals . The 7 letters  represent the following value I = 1 V = 5 X = 10 L = 50 C = 100 D = 500 and M = 1000 There are some specific rules to write Roman numerals . When a numeral is followed by a lower denomination numeral, the two are added together. The smaller numeral is subtracted from the greater if it is preceded by one …

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What are Roman numbers |Definition, Chart and Rules

Roman Numbers What are Roman numbers?  The numerals 0, 1, 2, 3,…..,9 are used in writing are called Hindu -Arabic numerals. So far, we’ve used the Hindu-Arabic numeral system. This isn’t the only system available. The Roman numeral system is one of the first ways of writing numerals used by the Romans in the past. In many places, this system is still in use. For example, Roman numerals are used in clocks; they are also used for classes in school time tables,  used in numbering of different volumes of books , and so on.  Alphabets are used to write fixed …

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Fractions and Decimals questions for class 7

Fractions and decimals class 7 Fractions and decimals  class 7 ( Short  Answer type questions) Question 1: If of a number is 15, find the number. Solution: Let be the required number. ÷ Hence the required number is 9. Question 2: Solve   . Solution.                                                            =  = Hence  =   Question 3: Multiply  . Solution. = = = Hence = .  Question 4:  Solve  . Solution: = = = = Question …

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Factoring trinomials worksheet

Factoring trinomials worksheet (solved examples)  Factorise  the  following  Quadratic trinomials    by spiliting  the middle terms.   We know, in order to factorise the expression ax2 + bx + c, we have to find two numbers p and q, such that p + q = b and p × q = ac. Example 1: Factorise  . Solution. Find two factors p and q such that p+q=-7 and pq =12 . Take p=-3 and q=-4  then 12= -3 x (-4) and -3-4=-7 . Therefore  = = = = Example 2: Obtain the factors of . Solution.  = = = Example 3: Find …

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