1.4.5
Reciprocals
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Reciprocals
To find the reciprocal of a number x$$, you must calculate $$\dfrac{1}{x}
Example 1
- Find the reciprocal of 2
- Use the fact that the reciprocal is \dfrac{1}{x}$$ and substitute $$x = 2
Example 2
- Find the reciprocal of
- Use the fact that the reciprocal is \dfrac{1}{x}$$ and substitute $$x = \dfrac{1}{4}
Example 3
- Find the reciprocal of
- Use the fact that the reciprocal is \dfrac{1}{x}$$ and substitute $$x = \dfrac{2}{5}
1Number
1.1Place Value & Ordering
1.2Numerical Operations
1.2.1Adding Integers1.2.2Subtracting Integers1.2.3Multiplying Integers1.2.4Dividing Integers1.2.5Dividing with a Remainder1.2.6Adding & Subtracting Decimals1.2.7Multiplying Decimals1.2.8Dividing Decimals1.2.9Adding & Subtracting Negative Numbers1.2.10Multiplying & Dividing Negative Numbers1.2.11Multiplying by Powers of Ten1.2.12Dividing by Powers of Ten
1.3Fractions
1.4Numerical Operations (Fractions)
1.5Roots & Powers
1.6Structure of Calculations
1.7Numerical Skills
1.8Factors & Multiples
1.9Systematic Listing
1.10Standard Form
1.10.1Reading Standard Form1.10.2Converting to Standard Form (Positive Powers)1.10.3Converting to Standard Form (Negative Powers)1.10.4Converting Form Standard Form (Positive Powers)1.10.5Converting From Standard Form (Negative Powers)1.10.6Adding & Subtracting Standard Form1.10.7Standard Form on a Calculator
1.11Fractions, Decimals & Percentages
1.12Percentage Change
1.13Rounding & Estimation
1.14Bounds & Accuracy
2Algebra
2.1Algebraic Notation
2.2Substitution & Simplification
2.3Brackets
2.4Algebraic Fractions
2.5Rearranging
2.6Functions
2.7Solving Linear Equations
2.8Inequalities
2.9Simultaneous Equations
2.10Sequences
2.11Coordinates
2.12Linear Graphs
2.13Quadratic Graphs
3Ratio, Proportion & Rates of Change
3.1Unit Conversion
3.2Compound Units
3.3Ratio Fundamentals
3.4Advanced Ratio and Scale
3.6Algebraic Proportion
4Geometry & Measures
4.1Area & Perimeter
4.2Properties of Shapes
4.3Angles
4.4Trigonometry
4.5Similarity & Congruence
4.6Circle Geometry
4.73D Representations
4.8Surface Area
4.10Transformations
4.11Scale Drawings
4.12Bearings
5Probability
5.1Single Events
5.2Combined Events
5.3Experimental Probability
6Statistics
6.1Averages & Range
6.2Scatter Graphs
6.3Collecting & Presenting Data
Jump to other topics
1Number
1.1Place Value & Ordering
1.2Numerical Operations
1.2.1Adding Integers1.2.2Subtracting Integers1.2.3Multiplying Integers1.2.4Dividing Integers1.2.5Dividing with a Remainder1.2.6Adding & Subtracting Decimals1.2.7Multiplying Decimals1.2.8Dividing Decimals1.2.9Adding & Subtracting Negative Numbers1.2.10Multiplying & Dividing Negative Numbers1.2.11Multiplying by Powers of Ten1.2.12Dividing by Powers of Ten
1.3Fractions
1.4Numerical Operations (Fractions)
1.5Roots & Powers
1.6Structure of Calculations
1.7Numerical Skills
1.8Factors & Multiples
1.9Systematic Listing
1.10Standard Form
1.10.1Reading Standard Form1.10.2Converting to Standard Form (Positive Powers)1.10.3Converting to Standard Form (Negative Powers)1.10.4Converting Form Standard Form (Positive Powers)1.10.5Converting From Standard Form (Negative Powers)1.10.6Adding & Subtracting Standard Form1.10.7Standard Form on a Calculator
1.11Fractions, Decimals & Percentages
1.12Percentage Change
1.13Rounding & Estimation
1.14Bounds & Accuracy
2Algebra
2.1Algebraic Notation
2.2Substitution & Simplification
2.3Brackets
2.4Algebraic Fractions
2.5Rearranging
2.6Functions
2.7Solving Linear Equations
2.8Inequalities
2.9Simultaneous Equations
2.10Sequences
2.11Coordinates
2.12Linear Graphs
2.13Quadratic Graphs
3Ratio, Proportion & Rates of Change
3.1Unit Conversion
3.2Compound Units
3.3Ratio Fundamentals
3.4Advanced Ratio and Scale
3.6Algebraic Proportion
4Geometry & Measures
4.1Area & Perimeter
4.2Properties of Shapes
4.3Angles
4.4Trigonometry
4.5Similarity & Congruence
4.6Circle Geometry
4.73D Representations
4.8Surface Area
4.10Transformations
4.11Scale Drawings
4.12Bearings
5Probability
5.1Single Events
5.2Combined Events
5.3Experimental Probability
6Statistics
6.1Averages & Range
6.2Scatter Graphs
6.3Collecting & Presenting Data
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