Area is the size of a surface. […]
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Height
Height The height is the measurement of the distance of an object from the base to the top. In geometry it is called altitude. The term height in geometry refers to the measurement of an object along the y-axis in coordinate geometry. Example of height in math is shown below. […]
Time, units of time
Time, units of time Time is the duration during which an event occurs, or is the period between two events.Time is commonly measured in units of seconds, minutes, hours, days, weeks, months, years, etc. https://www.crestolympiads.com/topic/class-2-time Units of time seconds < minutes < days < weeks < months < years […]
Addition
Addition Addition (signified by the plus symbol +) is one of the four basic operations of arithmetic. The addition of two whole numbers results in the total amount or sum of those values combined. Addidion is the inverse of subtraction. […]
