1) Given: (13 and 15), and (13 and -15).To find: We have to find the sum of the given numbers.Solution:  i) 13 + 15 = 28 ii) 13 + (-15) = 13 - 15 = -22) Given: (259 and 214), and (-623 and 326), and (-622, and  -254)To find: We have ... Read More

Given :Difference between two numbers $= 3$.Product of those numbers $= 54$.To do :We have to find the numbers.Solution :Let the one number be $= a$ So, second number $= a - 3$ Now, $a \times (a - 3) = 54$ $a^2 - 3a = 54$ $a^2 - 3a - ... Read More

Fibre is a natural product that is obtained from plants and animals or it could be synthetic, having been made in factories.These are strands of materials that are spun together to make yarn.For example, wool, cotton, jute, etc. that are used to make fabric.  Fabric is the end result of ... Read More

The picture shows a loom. A loom is a mechanism or tool used for weaving yarn and thread into textiles. Looms vary in sizes. There are different types of weaving looms and these include handloom, frame loom and backstrap loom.A loom is used to organize and hold the yarns of ... Read More

The plants do not move from one place to another i.e. plants do not show locomotion( movement of the entire body). But they can move their individual parts.There are two types of plant movements.1.) Tropic movements - The growth movement in plants in which the direction of the external stimulus is ... Read More

Given :The given expression is $64 - 23$.To do :We have to estimate the given expression.Solution :Round and Estimating Subtraction Problems in Tens:Round the numbers that will be subtracted to the nearest ten: if the number ends in 0, 1, 2, 3, or 4, we round down. If the number ... Read More

When acids react with metals, they produce a salt and hydrogen gas. Most metals react with acids, but not all. The general equation that describes the chemical reaction between an acid and metal is metal + acid = salt + hydrogen gas.Examples of metals that do not react with acids ... Read More

Given:Rani bought tickets for Kashmir for 25 student of her class costing Rs 624 eachTo do: Find Rani's total expenditure.Solution:Tickets bought by Rani = 25Cost of each ticket = Rs 625Total money spent on tickets = 624 $\times$ 25                        ... Read More

Given: $\frac{ 8}{5}+0=\frac{8}{5}=0+\frac{8}{5}$To do: Identify the property in the given expression.Solution: Property of zero known as Additive identity Additive identity of a number is that number (0) which when added gives the original number That is if 'a' is any number, $a + 0 = 0 + a = a$ Here ... Read More

This is Associative Property. When three or more whole numbers are added or multiplied, the results remain the same regardless of the grouping of the numbers. This is called the associative property of whole numbers. The addition and multiplication of whole numbers are associative.  Example 8 + (4 + 2) = 8 + 6 = 14 (8 + 4) + 2 = 12 + 2 = 14