Addition and Subtraction of Decimals Addition Adding decimals is a simple and same method of adding any other number. To add decimals, we follow these steps: Convert the given decimals to like decimals Write the decimals in column in alignment with their place value such that decimal points are below each other and also […]
Profit or Loss in Percentages? We can define profit or loss in two ways- In terms of absolute amount- This is the method we studied just now where profit or loss is defined in monetary value. In terms of percentage- This is the method we will study now where profit or loss is defined as […]
Grouping and Ordering of Decimals Like and Unlike Decimals Decimals places: The number of digits in the fractional/ decimal part of a decimal number gives the number of decimal places. Examples: (i) 5.76 has two decimal places (ii) 23.458 has three decimal places (iii)0.95 has two decimal places. Like Decimals: Like decimals refers […]
Decimals Introduction Students will understand the role of the decimal point and the relationship between tenths, hundredths, and thousandths at the conclusion of this lesson. Objective In this chapter students will Understand the concept of the parts of one whole by representing a unit by a block and further dividing it into parts. […]
FRACTIONS Fractions usually give information about portions. It is used in building multiple strategies. It gives answers to how much did you contribute, or what portion do you own in a business etc. Through this chapter we will be able to compare fractions; write fractions in their equivalent forms as well as their lowest terms; multiply and […]
Least Common Multiple (L.C.M.) The multiples which are common to a given set of numbers are called their common multiples. For example, the common multiples of 6 and 8 are 24, 48, 72, 96 and so on. The lowest among these common multiples is 24 which is the Lowest Common Multiple of 6 and 8. Thus, the […]
Highest Common Factor (H.C.F.) aka Greatest Common Factor (G.C.F.) H.C.F (G.C.F) The factors which are common to two or more numbers are called their common factors. The factor which is greatest among the common factors of a given set of numbers is called their Highest Common Factor (H.C.F) or (G.C.F). Example- Let us take two numbers 24 and […]
Factors & Multiples Factors The numbers that we multiply to get a certain number are called its factors. For example, 2 × 5 = 10 Here, both 2 and 5 are factors of 10. In the above example, we can see that 2 and 5 both can completely divide 10 without leaving any remainder. So, we […]
H.C.F. AND L.C.M. Factors of a number are exact divisors of that number. But what is the use of such concepts in real life? These concepts are used in arranging things. It helps in the arrangements of items into rows and columns. In this chapter we will discuss: Finding prime factors and multiples of a number […]
Multiplication of Large Numbers Multiplication of two numbers is nothing but repeated addition. It is equivalent to adding one of the numbers as many times as the value of the other. Examples- 7 X 5 = 7 + 7 + 7 + 7 + 7 = 35 9 X 3 = 9 + 9 + […]