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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. These are key tools to help you solve problems and understand more advanced topics. Let's dive in!
What are Mathematical Symbols?Mathematical symbols are characters used to represent operations, values, relationships, and other mathematical concepts. They help us communicate ideas quickly and clearly. For example, symbols like +, −, ×, ÷, and = are used to show addition, subtraction, multiplication, division, and equality.
Basic Operations and Their SymbolsIn mathematics, operations such as addition, subtraction, multiplication, and division are fundamental. They are represented by symbols like + for addition, − for subtraction, × for multiplication, and ÷ for division. These operations help us manipulate numbers and solve problems.
What is the symbol for multiplication?
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Order of OperationsThe order of operations is a set of rules to determine which operations to perform first when solving a problem with multiple operations. The acronym BODMAS (Brackets, Orders, Division/Multiplication, Addition/Subtraction) helps us remember the correct order.
What does the 'O' in BODMAS stand for?
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Using Parentheses or BracketsBrackets (or parentheses) are used to group terms together and indicate that the operations inside them should be performed first. For example, in the expression (3 + 4) × 2, you add 3 + 4 first, then multiply the result by 2.
In the expression (5 + 2) × 3, the operation inside the {{blank0}} is performed first.
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Equality and Inequality SymbolsEquality (=) shows that two values are the same. Inequality symbols, ≤, and ≥, are used to compare values. For example, 5 > 3 means '5 is greater than 3'.
Match the items on the left with their correct pairs on the right
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Fractions and DivisionFractions represent a part of a whole. They use a numerator and a denominator, separated by a line (e.g., ¾). Division is often shown using ÷ or a fraction bar, and it splits a number into equal parts.
Which of the following represents division?
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Review Time!You've learned about mathematical symbols and operations, including addition, subtraction, multiplication, division, equality, and inequality. Let's test your understanding with a few questions!
Which of the following are true about BODMAS? (Select all that apply)
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Match the items on the left with their correct pairs on the right
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The symbol {{blank0}} represents values that are {{blank1}} than or equal to a given value.
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Match the items on the left with their correct pairs on the right
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Well Done!You've completed the lesson on essential mathematical symbols and operations. Keep practising to become even more confident. Great effort today!
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