Integers class 7

Integers class 7 It includes all natural numbers , 0  and negative of natural  numbers . It is denoted by ,                                                                                     representation of integers on number line Negative  integers are on the left side of 0 Positive integers are on the right side of the zero 0 is neither +ve  nor -ve. Integers are closed under addition. It …

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Fraction questions for class 6

Fraction questions for class 6 The following questions on fractions have different types of questions that can be practiced by the students to get more ideas to solve the problems based on fractions. Fraction questions for class 6 (solved examples) Example 1: Make equivalent fractions by multiplying the numerator and denominator by the given number. (a)      by 4                        (b)    by 5 Sol.  (a)          Ans.     and  are equivalent fractions. (b)          Ans.     and   are equivalent fractions. Example …

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DMAS questions for class 5

DMAS questions for class 5 ( NUMERICAL EXPRESSIONS WITHOUT BRACKETS ) DMAS RULE DMAS rule is followed when multiple arithmetic operations  like addition, subtraction, multiplication and division are present  in a given mathematical expression.  In ‘DMAS’, D stands for division, M for multiplication, A for addition, and S for subtraction. DMAS represents the order of operations. When a mathematical expression involving all four operations is given, we solve these operations in the order: Division     2. Multiplication       3. Addition      4.  Subtraction For example, consider the following cases. Example: Simplify: 5 + 4 × 3 – 9 …

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Percentage questions for class 6 and practice worksheet PDF Download

Percentage questions for class 6 Per means ‘for every’ or ‘out of‘ and cent means ‘hundred’ . Thus percent means ‘ for every hundred’ or ‘out of hundred’. The term percent comes from two Latin words per centum which means ‘out of 100’. Thus  5 percent means 5 out of 100== 5 hundredths. The symbol for percent is . Example 23% =23 hundredths= Converting a  Percentage into a Fraction or Decimal: To convert a given percentage into a fraction or decimal (i) Remove the sign of percentage  and at the same  time divide by 100. (ii) Reduce the resulting fraction into …

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What is the hcf of smallest prime number and the smallest composite number?

What is the HCF of smallest prime number and the smallest composite number? Prime numbers:    A  number having exactly two different factors , namely 1 and itself is called a prime number. Clearly , 1 has only one factor , namely 1 itself. 1 is neither prime nor composite. Examples : The first 25 prime numbers (all the prime numbers less than 100) are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97 Note:  The smallest prime number is 2 and it is …

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