Final Cover - For Printing

Real Numbers Rational numbers and irrational numbers together form the set of real numbers. The set of real numbers is denoted ...

FOUR FUNDAMENTAL OPERATIONS Four fundamental operations The four fundamental operations on numbers are addition, subtraction, m ...

Alternate method: Even number Divide the number by 2. Attach 0 to the right of the quotient. Eg. : To multiply 128 ×^5 First div ...

Eg. :Consider 72 × 15 72 ÷ 2 = 36 72 + 36 = 108 Therefore. 72 × 15 = 1080 To multiply an odd number by 15, write that odd number ...

TESTS OF DIVISIBILITY Tests of divisibility If the nature of divisibility among numbers is understood then the divisors can be f ...

If the difference of the sums of the digits in alternate places is zero or 11, then the number is divisible by 11. To check a p ...

DECIMALS Decimals Fractions having their denominators as 10, 100, 1000 etc., are called as decimal fractions. In other words, d ...

concerned the place value of the digits starting from the left is one-tenth, one- hundredth, one-thousandth and so on. To enable ...

As is evident from the example the process of division is not complete and the process continues indefinitely. Hence such decima ...

Addition of decimals To add two or more decimals, arrange the numbers in such a way that the decimal points of the numbers are ...

Multiplication of decimals To multiply a decimal by another decimal, first remove the decimal point and perform the ordinary mu ...

Therefore,^80.^2648. 002 x^10001000 =^82642.^8 =^4132.^4 Decimal division is similar to ordinary division except for the removal ...

Hence, 4 : 5 is greater than 3 : 4 The idea may be explained through exercises. To get mastery of the idea, the child may be ask ...

Note that 101 = 505 = 808 = 10010 Therefore, the number of pens and their cost are in direct variation. Eg. 2: Let the cost of o ...

PERCENTAGE Percentage A percentage is a fraction whose denominator is 100. The symbol for percentage is “%”. The word percent i ...

Convert 0.125 into a percent. 0.125 =^0.^125100 ×^100 =^ 12.5 100 =^ 12.5% Convert 43 into a percent. 43 = 43 ××^100100 =^10075 ...

Here, the S.P is greater than the C.P, and hence there is a profit. Therefore, profit = S.P – C.P = 150 – 100 = 50 units. To ena ...

FRACTIONS Whole/Part The concept of whole/part can be taught to child by providing real life experiences, say for instance, an ...

The concepts of quarter and three fourth can also be taught with the same heap of beads dividing the same into four heaps. The i ...

The concept of proper fraction may be explained orally and then the child be given a few fractions printed in Braille and may be ...