Mathematics Class IV

Numbers
5 Topics | 2 Quizzes
Introduction to Number System
Face value and place value
Successor and Predecessor
Ascending and Descending Order
Roman Numbers
Concept Checkers-Number Systems-Class IV
Practice Questions-Number Systems-Class IV
The Four Operations
4 Topics | 4 Quizzes
Addition
Substraction
Multiplication
Division
Practice Questions – Addition and Substraction-Class IV
Concept Checkers-Multiplication and Division-Class IV
Practice Questions-Multiplication and Division-Class IV
Concept Checkers – Addition and Substraction-Class IV
Multiples and Factors
4 Topics | 2 Quizzes
Multiples
Factors
Prime and Composite Numbers
Test of Divisibility
Concept Checkers-Factors and Multiples-Class IV
Practice Questions-Factors and Multiples-Class IV
HCF and LCM
6 Topics
HCF
LCM
Prime Factorisation
HCF by Prime Factorization
LCM by Prime Factorization
LCM by Division Method
Fractions
5 Topics | 2 Quizzes
Fractions
Equivalent Fractions
Types of Fractions
Comparing Fractions
Adding and Substracting
Concept Checkers-Fractions-Class IV
Practice Questions-Fractions-Class IV
Decimals
11 Topics | 2 Quizzes
What is Decimals?
Extending The Place Value Chart To Tenths
Extending The Place Value Chart Hundredths And Thousandths
Writing a Fraction as Decimals
Writing a Decimal Fraction as Common Fraction
Equivalent Decimals
Conversion of Unlike Decimal Numbers into Like Decimal Numbers
Addition Of Decimals
Subtraction Of Decimals
Multiplication of Decimal Numbers by 10,100,1000
Division of Decimal Numbers by 10,100,1000
Concept Checkers-Decimals-Class IV
Practice Questions-Decimals-Class IV
Metric Measures
8 Topics | 2 Quizzes
Length
Mass
Capacity
Converting from Higher to Lower Units
Converting from Lower to Higher Units
Addition and Subtraction of Metric Measures
Substraction
Estimation
Concept Checkers-Measurement-Classs IV
Practice Questions-Measurement-Classs IV
Time
7 Topics | 2 Quizzes
What is Time and Facts About Clock
Conversion of Time – Hour and Minutes
Conversion Of Time – Minutes And Seconds
The 24 – Hour Clock
Addition and Subtraction Of Time
Time Intervals
Calendar
Practice Questions-Time-Class IV
Concept Checkers-Time-Class IV
Money, Profit And Loss
7 Topics | 4 Quizzes
Money
Conversion of Dollar and Cents
Addition and Subtraction of Money
Multiplication and Division of Money
Profit and Loss
Finding Selling Price
Finding Cost Price
Concept checkers-Money-Class IV
Practice Questions-Money-Class IV
Concept Checkers
Practice Questions
Geometry
3 Topics | 2 Quizzes
Points and Line
Polygons
Circles
Concept Checkers-Geometry-Class IV
Practice Questions-Geometry-Classs IV
Symmetry and Pattern
1 Topic | 2 Quizzes
Symmetry and Pattern
Concept Checkers-Symmetry and Pattern-Class IV
Practice Questions-Symmetry and Pattern-Class IV
Perimeter and Area
2 Topics | 2 Quizzes
Perimeter
Area
Concept Checkers-Perimeter and Area-Class IV
Practice Questions-Perimeter and Area-Class IV
Data Handling
1 Topic | 2 Quizzes
Data representation
Concept Checkers-Data Handling-Class IV
Practice Questions-Data Handling-Class IV
Mock Test 1 – Class IV
Mock Test 3
Previous Topic

Roman Numbers

Mathematics Class IV Numbers Roman Numbers

There are 7 basic symbols to write any roman numeral.

Roman numeral I V X L C D M
Hindu-Arabic 1 5 10 50 100 500 1000

Rules

1.Repetition of a Roman numeral means addition. 

Ex-

\text{II}=1+1=2,\ \text{III}=1+1+1=3,\ \text{XX}=10+10=20.

2. A smaller numeral written to the right of a larger numeral is always added to the larger numeral.

Ex-

\text{VI}=5+1=6,\ \text{VII}=5+1+1=7.

3. A smaller numeral written to the left of a larger numeral is always subtracted from the larger numeral.

Ex-

\text{IV}=5-1=4,\ \text{IV}=50-10=40.

4. When a smaller number is placed between two larger numerals, it is always subtracted from the larger number immediately following it.

Ex-

\text{XIV}=10+(5-1)=14,\ \text{XIX}=10+(10-1)=19.

 

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