Author Archives: mkandi30196

Approximations in calculations is done by rounding each of the numbers in such a way that the calculation becomes relatively straight forward. The symbol ‘≈’means ‘is approximately equal to’  Example Estimate the value of 55×252 by rounding each number to one significant figure  Solution 55×252 Hence in this question we have to first round 55Continue reading “APPROXIMATION IN CALCULATIONS.”

SIGNIFICANT FIGURES DEFINITION. -Significant figures are all non-zero digits, example 7436, the 7, 4, 3 and 6 are non-zero digits hence are significant figures. -A zero (or zero) between non-zero digits is (are) significant figures. Example 7046 and 4003, the zero between non-zero digits is (are) Significant figures. Example 5007=5000(to 1 significant figure) Explanation. TheContinue reading “Significant figures Definition and Calculations.”

NUMBER SYSTEMS DEFINITION. A number is a mathematical value that helps to count or measure objects. The system in which these numbers are expressed and represented is called number systems. Using numbers we can perform different Mathematical calculations.  Base ten number systems. Base ten number system is a number system that uses ten different digitsContinue reading “Definition and Classification of Numbers systems”

Definition of decimals. Decimals are   numbers, which has a whole number and the fractional part separated by a decimal point. The dot present between the whole number and the fractional part is called the decimal point. For example, 78.965 is a decimal number. Here, 78 is a whole number part and 965 is the fractionalContinue reading “Definition, Types, Place values and Operations of Decimals.”

FRACTIONS DEFINITION. A single unit can be broken into equal parts called fractions example 1/4, ½, 1/5. If for example, the unit is broken into five equal parts and two parts are then taken, the fraction is written as 2/5. The 5 is called the denominator and the 2 is called the numerator. TYPES OFContinue reading “Definition, Types, and Conversion of Fractions.”

ROUNDING OFF NUMBERS. Numbers can be approximated (or rounded) to make them easier to work with. A number can be approximated by rounding. Approximation or rounding creates a new number that is similar but not exactly equal to the original number.  Rounding numbers to the nearest 10,100,1000. But before rounding a number we need toContinue reading “APPROXIMATION OF NUMBERS.”