Like and Unlike Decimal Numbers

Topics

Number System (Including Estimation and Approximation)
Theme 1 : Numbers
Number System(Consolidating the Sense of Numberness)
- Comparing Numbers
- To Form The Smallest and The Greatest Numbers Using Given Digits
- Operations on Larger Numbers
Number System
Numbers in Indian and International Systems (With Comparison)
Estimation
- Basic Concept of Estimation and Approximation of Numbers
- Rounding off a Number
- Estimation in Basic Operations
Theme 2 : Ratio, Proportion and Arithmetic Problems
Ratio and Proportion
Algebra
Natural Numbers and Whole Numbers (Including Number Line and Patterns)
Theme 3 : Algebra
Numbers in India and International System (With Comparison)
- Concept of Unit, Number, Numeral and Numeration
- Hindu-Arabic (Indian) System of Numeration
- International System of Numeration
- Indian vs. International Place Value System
Theme 4 : Geometry
Negative Numbers and Integers
Place Value
- Concept of Place Value
- Largest and Smallest Numbers
Geometry
Mensuration
Natural Numbers and Whole Numbers (Including Patterns)
- Natural Numbers
- Whole Numbers
- Successor and Predecessor of Whole Number
- Properties of Whole Numbers
- Mathematical Patterns
- Patterns in Whole/Natural Numbers
- Magic Square
- Matchstick Pattern
Theme 5 : Mensuration
Sets
Data Handling
Negative Numbers and Integers
- Concept of Negative Numbers
- Integers
- Ordering of Integers
- Addition of Integers
- Subtraction of Integers
- Integers
Fractions
Theme 6 : Statistics
Decimal Fractions
Number Line
- Number Line
- Representation of Natural numbers, Whole Numbers and Integers On Number Line
- Comparing Numbers
- Addition and Subtraction on a Number Line
HCF and LCM
- Factors and Common Factors
- Prime and Composite Numbers
- Eratosthenes’ Method of Finding Prime Numbers
- Prime Factorisation
- Highest Common Factor (HCF)
- Methods of Finding HCF
- Multiples and Common Multiples
- Lowest Common Multiple
- Methods of Finding LCM
Playing with Numbers (Including H.C.F. and L.C.M.)
Ratio and Proportion (Including Unitary Method)
Playing with Numbers
- Simplification of Brackets
- Finding Factors Using Rectangular Arrangements and Division
- Factors and Common Factors
- Multiples and Common Multiples
- Concept of Even and Odd Number
- Tests for Divisibility of Numbers
- Divisibility by 2
- Divisibility by 4
- Divisibility by 8
- Divisibility by 3
- Divisibility by 6
- Divisibility by 9
- Divisibility by 5
- Divisibility by 11
Sets
- Concept of Sets
- Representation of a Set
- Types of Sets
- Cardinality of a Set
Percent (Percentage)
Ratio
- Quantitative Comparison Using Basic Operations
- Ratio
- Simplifying Ratios
- Problems based on Ratio
- All About Ratios: Dividing, Comparing, and Modifying Quantities
Idea of Speed, Distance and Time
Fundamental Concepts (With operations on Algebraic Expressions)
Proportion (Including Word Problems)
- Proportion
- Concept of Continued Proportion
Framing Algebraic Expressions (Including Substitution and Linear Equations)
Unitary Method
- Unitary Method
- Types of Variation
Fractions
- Concept of Fraction
- Types of Fractions
- Concept of Proper and Improper Fractions
- Concept of Mixed Fractions
- Like and Unlike Fraction
- Concept of Equivalent Fractions
- Conversion between Improper and Mixed fraction
- Conversion between Unlike and Like Fractions
- Simplest Form of a Fractions
- Comparing Fractions
- Addition of Fraction
- Subtraction of Fraction
- Multiplication of Fraction
- Division of Fractions
- Using Operator 'Of' with Multiplication and Division
- BODMAS Rule
- Problems Based on Fraction
Fundamental Concepts (Including Angles and their Properties)
Triangles (Including Types and Properties of Triangles)
Decimal Fractions
- The Decimal Number System
- Like and Unlike Decimal Numbers
- Conversion between Decimal Fraction and Common Fraction
- Addition of Decimal Fraction
- Subtraction of Decimal Numbers
- Multiplication of Decimal Numbers
- Division of Decimal Numbers
- Application of Decimals in Real Life
- Word Problems based on Decimals
Percent (Percentage)
- Basic Concept of Percentage
- Conversion between Percentage and Fraction or Decimal
- Expressing Quantities as Percentages
- Increase or Decrease in Percent
- Percentage Problems Related to Environment
Quadrilaterals
Idea of Speed, Distance and Time
- Speed, Distance and Time
- Uniform Speed, Variable Speed, and Conversions
Circles
Constructions
Symmetry
Fundamental Concepts
- Introduction to Algebra
- Constants and Variables in Mathematics
- Classification of Terms in Algebra
- Algebraic Expressions
- Factors and Common Factors
- Powers and Exponents
- Basic Concept of Polynomial and its Degree
Fundamental Operations (Related to Algebraic Expressions)
- Addition of Like and Unlike Terms
- Subtraction of Like and Unlike Terms
- Addition of Polynomials
- Subtraction of Polynomials
- Multiplication of Algebraic Expressions
- Division of Algebraic Expressions
Recognition of Solids
Substitution (Including Use of Brackets as Grouping Symbols)
- Basic Concept of Substitution
- Brackets in Mathematics
Perimeter and Area of Plane Figures
Framing Algebraic Expressions (Including Evaluation)
- Algebraic Expressions
- Evaluation of Algebraic Expressions
Data Handling (Including Mean and Median)
Simple (Linear) Equations (Including Word Problems)
- Concept of Linear Equations
- Rules for Solving a Linear Equation
- Methods of Solving Linear Equations
- Word Problems on Linear Equations
Fundamental Concepts
- Fundamentals of Geometrical Concepts
- Concept of Points
- Concept of Lines
- Rays
- Line Segments
- Mathematical Concept of Surface
- Planes
- Parallel Lines
- Intersecting Lines
- Concept for Open and Closed Figures
- Plane Closed Figures
- The Perpendicular
- The Perpendicular Bisector
Angles (With Their Types)
- Concept of Angle
- Angle and Its Formation
- Measuring Angles
- Types of Angles
- Concept of Pairs of Angles
- The Sum of the Angles Around a Point is Always 360°
Properties of Angles and Lines (Including Parallel Lines)
- Properties of Adjacent and Vertically Opposite Angles
- Parallel Lines
- Concept of Transversal Lines
- Construction of an Angle
- Drawing a Perpendicular to a Line
Triangles (Including Types, Properties and Constructions)
- Basic Concepts of Triangles
- Exterior Angle of a Triangle and Its Property
- Classification of Triangles based on Angles
- Classification of Triangles based on Sides
- Altitudes of a Triangle
- Median of a Triangle
- Construction of Triangles
Quadrilateral
- Quadrilaterals
- Angle sum Property of Quadrilateral
- Types of Quadrilaterals
Polygons
- Basic Concept of Polygons
- Sum of Interior Angles of a Polygon
- Sum of Exterior Angles of a Polygon
- Basic Concept of Regular Polygon
The Circle
- Basic Concept of Circle
- Secant and Tangent
- Arc of the Circle
- Sector of a Circle
- Segment of a Circle
- The Interior and the Exterior of a Circle
- Circumcircle of a Triangle
- Incircle of a Triangle
Symmetry (Including Constructions on Symmetry)
- Concept of Symmetry
- Reflection Symmetry in 2-D Shapes
- Construction of Symmetric Points and Lines
Recognition of Solids
- Identification of 3-d Shapes
- Faces, Edges and Vertices of Polyhedron
- Nets of 3D Figures
- Oblique Sketches of 3D Shapes
Perimeter and Area of Plane Figures
- Basic Concepts in Mensuration
- Concept of Perimeter
- Perimeter of a Rectangle
- Perimeter of Squares
- Perimeter of an Equilateral Triangle
- Problems based on Perimeter
- Shapes with the Same Perimeter
- Concept of Area
- Area of Rectangle
- Area of Square
- Problems based on Area
Data Handling (Including Pictograph and Bar Graph)
- Mathematical Data Collection and Organisation
- Frequency Distribution and Its Applications
- Pictographs
- Bar Graphs
Mean and Median
- Concept of Mean (Average)
- Basic Concept of Median

Definition: Like Decimal Numbers
Definition: Unlike Decimal Numbers
Steps to Convert Unlike Decimals to Like Decimals
Example
Key Points Summary

CISCE: Class 6

Definition: Like Decimal Numbers

Decimal numbers are called like decimals if they have the same number of digits after the decimal point.

Example:

5.7, 0.8, 329.2, 50.6 (all have one decimal place)
26.03, 8.87, 0.52, 400.04 (all have two decimal places)

CISCE: Class 6

Definition: Unlike Decimal Numbers

Decimal numbers are called unlike decimals if they have a different number of digits after the decimal point.

Example:

2.6 (1 decimal), 40.32 (2 decimals), 0.009 (3 decimals), 3.0728 (4 decimals), 328.2 (1 decimal)

CISCE: Class 6

Steps to Convert Unlike Decimals to Like Decimals

Step 1: Identify the decimal number with the maximum number of decimal places.
Step 2: Add zeros to the end of the other numbers after the decimal point so all numbers have the same number of decimal places.

CISCE: Class 6

Example

Given: 5.8, 239.06, 0.5497

Maximum decimal places: 4 (in 0.5497)

Convert:

5.8 → 5.8000
239.06 → 239.0600
0.5497 → 0.5497

CISCE: Class 6

Key Points Summary

Like decimals: same number of digits after the decimal.
Unlike decimals: different numbers of digits after the decimal.
To make decimals alike, add zeros without changing their actual value.

Test Yourself

Class 6 MCQ Test

Like and Unlike Decimal Numbers

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Topics

Number System (Including Estimation and Approximation)

Theme 1 : Numbers

Number System(Consolidating the Sense of Numberness)

Number System

Numbers in Indian and International Systems (With Comparison)

Estimation

Theme 2 : Ratio, Proportion and Arithmetic Problems

Ratio and Proportion

Algebra

Natural Numbers and Whole Numbers (Including Number Line and Patterns)

Theme 3 : Algebra

Numbers in India and International System (With Comparison)

Theme 4 : Geometry

Negative Numbers and Integers

Place Value

Geometry

Mensuration

Natural Numbers and Whole Numbers (Including Patterns)

Theme 5 : Mensuration

Sets

Data Handling

Negative Numbers and Integers

Fractions

Theme 6 : Statistics

Decimal Fractions

Number Line

HCF and LCM

Playing with Numbers (Including H.C.F. and L.C.M.)

Ratio and Proportion (Including Unitary Method)

Playing with Numbers

Sets

Percent (Percentage)

Ratio

Idea of Speed, Distance and Time

Fundamental Concepts (With operations on Algebraic Expressions)

Proportion (Including Word Problems)

Framing Algebraic Expressions (Including Substitution and Linear Equations)

Unitary Method

Fractions

Fundamental Concepts (Including Angles and their Properties)

Triangles (Including Types and Properties of Triangles)

Decimal Fractions

Percent (Percentage)

Quadrilaterals

Idea of Speed, Distance and Time

Circles

Constructions

Symmetry

Fundamental Concepts

Fundamental Operations (Related to Algebraic Expressions)

Recognition of Solids

Substitution (Including Use of Brackets as Grouping Symbols)

Perimeter and Area of Plane Figures

Framing Algebraic Expressions (Including Evaluation)

Data Handling (Including Mean and Median)

Simple (Linear) Equations (Including Word Problems)

Fundamental Concepts

Angles (With Their Types)

Properties of Angles and Lines (Including Parallel Lines)

Triangles (Including Types, Properties and Constructions)

Quadrilateral

Polygons

The Circle

Symmetry (Including Constructions on Symmetry)

Recognition of Solids

Perimeter and Area of Plane Figures

Data Handling (Including Pictograph and Bar Graph)

Mean and Median

Definition: Like Decimal Numbers

Definition: Unlike Decimal Numbers

Steps to Convert Unlike Decimals to Like Decimals

Example

Key Points Summary

Test Yourself

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