OTHER CLASS VI TOPICS
Algebraic Expressions
Algebraic Expressions
Substitution
Decimals
Convert Decimal into Fraction
Finding place value
Fractions
Addition of Fractions
Comparison of Fractions
Conversion of Mixed fractions to Improper fractions
Finding Equivalent Fractions
Fraction as a part of a collection
Subtraction of Fractions
Geometry
Line Segment, Ray and Line
Integers
Absolute Value of an Integer
Addition and Subtraction of Integers
Additive Inverse
Consecutive Integers
Division of Integers
Multiplication of Integers
Successor and Predecessor of an Integer
Knowing our Numbers
Biggest and smallest numbers
Indian System of Numeration
Linear Equations
Linear Equations
Number System
Number System
Roman Numerals
Percentage
Percentage
Perimeter
Perimeter of triangles
Polynomials
Addition of Polynomials
Profit and Loss
Profit and Loss
Ratio and Proportion
Proportion
Ratio
Statistics
Bar Graphs
Substitution
Substitution
Triangles
Triangles
Whole Numbers
Addition of Whole Numbers
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Mathematics
Class VI
Integers
Successor and Predecessor of an Integer
Question
The predecessor of -20 is
Validate
Solution
The correct answer is -21
Explanation
Let $a$ be an integer.
Then $(a - 1)$ is called the predecessor of $a$.
Hence predecessor of -20 is (-20 - 1) = -21
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