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Learn: Essential Mathematical Symbols and Operations
iGCSE Mathematics
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Welcome!Today we'll explore essential mathematical symbols and operations used in iGCSE Mathematics. These are the basics that will help you solve problems and understand more complex topics. Let's get started!
What are Mathematical Symbols?Mathematical symbols are used to represent operations, relationships, and values in maths. They make it easier to communicate ideas and solve problems efficiently. Some common symbols include +, −, ×, ÷ for basic operations and =, >, for comparisons.
Basic OperationsThere are four fundamental operations in maths: addition (+), subtraction (−), multiplication (×), and division (÷). These are used to perform calculations with numbers. For example, adding two numbers combines their values, while subtraction finds the difference between them.
Quick check: Which symbol represents subtraction?
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Order of OperationsIn mathematics, operations must be performed in a specific order. This is called BIDMAS: Brackets, Indices, Division/Multiplication, Addition/Subtraction. Following BIDMAS ensures accurate results when solving complex equations.
Select the operations that should be performed first according to BIDMAS:
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Comparison SymbolsComparison symbols show the relationship between values. Common ones include = (equal to), > (greater than), < (less than), and ≥ (greater than or equal to). For example, 5 > 3 means 5 is greater than 3.
The symbol {{blank0}} means 'greater than', while the symbol {{blank1}} means 'less than'.
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Fractions and DecimalsFractions and decimals are two ways to represent parts of a whole. A fraction consists of a numerator and denominator (e.g., 1/2). A decimal uses a decimal point to show parts of a number (e.g., 0.5).
Match the items on the left with their correct pairs on the right
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Error Intervals and RoundingIn maths, precise calculations are important, but many times we need to approximate. Error intervals show the range of values a number could be if rounded. Rounding reduces a number to a simpler form, such as to the nearest whole number or decimal place.
Match the items on the left with their correct pairs on the right
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Review Time!Great work! You've learned about mathematical symbols, operations, BIDMAS, and rounding. Let's test your understanding with a few questions.
Which of the following are mathematical operations? (Select all that apply)
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According to BIDMAS, operations inside {{blank0}} should be completed first.
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Which statement is correct about rounding?
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Match the items on the left with their correct pairs on the right
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