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Home
Class 4
Measurement of Length (Long and Short)
Addition and Subtraction of Lengths
Class 4 NCERT (CBSE and ICSE)
Addition and Subtraction of Lengths
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Master this topic as part of
Measurement of Length (Long and Short)
Class 4
1.
Factors and Multiples *
1.1.
Factors and Multiples of a Number
1.1.1.
Factors
1.1.1.1.
Finding Factors of a Number
1.1.1.2.
HCF (Highest Common Factor)
1.1.2.
Multiples
1.1.2.1.
Finding Multiples of a Number
1.1.2.2.
LCM (Lowest Common Multiple)
1.1.3.
Properties of Factors and Multiples
1.2.
Types of Numbers
1.2.1.
Odd and Even Numbers
1.2.1.1.
Even Numbers
1.2.1.2.
Odd Numbers
1.2.2.
Prime and Composite Numbers
1.2.2.1.
Composite Numbers
1.2.2.2.
Prime Numbers
1.2.2.3.
Properties of Composite and Prime
1.3.
Tests of Divisibility
1.3.1.
Test Divisibility by 2
1.3.2.
Test Divisibility by 3
1.3.3.
Test Divisibility by 5
1.3.4.
Test Divisibility by 6
1.3.5.
Test Divisibility by 9
1.3.6.
Test Divisibility by 10
1.4.
Prime Factors of a Number by Factor Tree Method
2.
Roman Numerals (up to 100) *
2.1.
Introduction to Roman Numerals
2.2.
Write Roman Numerals for Hindu-Arabic Numerals
2.3.
Write Hindu-Arabic Numerals for Roman Numerals
2.4.
Meaningless Roman Numerals
2.5.
Compare Roman Numerals
2.6.
Operations on Roman Numerals
2.7.
Word Problems on Basic Arithmetic Using Roman Numerals
3.
Geometry *
3.1.
Understand the Basic Terms in Geometry (Point, Line, Line Segment, Ray, and Plane)
3.2.
Using a Ruler
3.3.
Identify and Count the Number of Line Segments
3.4.
Types of Lines
3.4.1.
Straight and Curved Lines
3.4.2.
Horizontal, Vertical, Curved, and Slant Lines
3.5.
Open and Closed Shapes
3.6.
Polygons
3.6.1.
Understanding Polygons
3.6.2.
Name the Polygon
3.6.3.
Introduction to Plane Shapes (Rectangle, Square, Circle, and Triangle)
3.6.4.
Count the Vertices and Sides of a Plane Shape
3.6.5.
Compare Vertices and Sides of Different Plane Shapes
3.6.6.
Counting the Number of Triangles and Rectangles in a Given Figure
4.
Numbers (Building with Bricks)
4.1.
Representation of Large Numbers
4.1.1.
Write Large Numbers by Separating the Periods
4.1.1.1.
Write Large Numbers by Separating the Periods (Indian Number System)
4.1.1.2.
Write Large Numbers by Separating the Periods (International Number System)
4.1.2.
Write Numerals as Number Names
4.1.2.1.
Write Numerals as Number Names (Indian Number System)
4.1.2.2.
Write Numerals as Number Names (International Number System)
4.1.3.
Write Number Names as Numerals
4.1.3.1.
Write Number Names as Numerals (Indian Number System)
4.1.3.2.
Write Number Names as Numerals (International Number System)
4.2.
Forming Numbers
4.3.
Place Value and Face Value of a Digit in a Numeral
4.4.
Expanded Form of a Number
4.5.
Successor and Predecessor
4.5.1.
Successor of a Number
4.5.2.
Predecessor of a Number
4.6.
Compare and Order Numbers
4.6.1.
Compare Numbers With Different Number of Digits
4.6.2.
Compare Numbers With Same Number of Digits
4.7.
Operations on Large Numbers
4.7.1.
Addition of Large Numbers
4.7.2.
Subtraction of Large Numbers
4.7.3.
Word Problem on Operations on Large Numbers
4.7.3.1.
Word Problem on Addition of Large Numbers
4.7.3.2.
Word Problem on Subtraction of Large Numbers
5.
Measurement of Length (Long and Short)
5.1.
Conversion of Metric Units of Length
5.1.1.
Conversion from Higher to Lower Units of Length
5.1.2.
Conversion from Mixed Units to Lower Units of Length
5.1.3.
Conversion from Lower to Higher Units of Length
5.2.
Addition and Subtraction of Lengths
5.2.1.
Addition of Lengths
5.2.1.1.
Addition of Lengths in Meters and Centimeters
5.2.1.2.
Addition of Lengths in Kilometers and Meters
5.2.2.
Subtraction of Lengths
5.2.2.1.
Subtraction of Lengths in Meters and Centimeters
5.2.2.2.
Subtraction of Lengths in Kilometers and Meters
5.3.
Word Problems on Length
5.3.1.
Word Problems on Addition of Lengths
5.3.2.
Word Problems on Subtraction of Lengths
6.
Mixed Problems (A Trip to Bhopal)
6.1.
Word Problems: Mixed Operations
6.2.
Money
6.2.1.
Addition and Subtraction of Money
6.2.2.
Multiplication of Money by a Whole Number
6.2.3.
Division of Money by a Whole Number
6.2.4.
Word Problems on Multiplication of Money by a Whole Number
6.2.5.
Word Problems on Division of Money by a Whole Number
6.3.
Unitary Method
6.3.1.
Word problems Using Unitary Method Involving Multiplication
6.3.2.
Word problems Using Unitary Method Involving Division
6.3.3.
Word problems Using Unitary Method Involving Both Multiplication and Division
7.
Time (Tick-Tick-Tick)
7.1.
Clock
7.1.1.
Basic Facts About Clocks and Time
7.1.2.
Measuring Time
7.1.2.1.
Reading Time on the Clock (Minute Hand is at 3, 6, or 9)
7.1.2.2.
Reading Time on the Clock (Minute hand is at any number)
7.1.2.3.
Word Problems on Reading Time
7.1.2.4.
Relate Days, Hours, Minutes, and Seconds
7.1.3.
24-Hour Clock Time
7.1.3.1.
Understanding 24-Hour Clock Time
7.1.3.2.
Conversion from 24-Hour Clock Time to 12-Hour Clock Time
7.1.3.3.
Conversion from 12-Hour Clock Time to 24-Hour Clock Time
7.1.4.
Use of 'AM' and 'PM'
7.1.5.
Addition and Subtraction of Time
7.1.5.1.
Addition of Time
7.1.5.2.
Subtraction of Time
7.1.5.3.
Word Problems on Time
7.2.
Calendar
7.2.1.
Days of the Week
7.2.2.
Months of the Year
7.2.3.
Ordinary, Leap, and Century Years
7.2.4.
Writing Dates
7.2.5.
Word Problems on Calendar
8.
Solid Shapes (The Way The World Looks)
8.1.
Identify Different Solid Shapes (Cuboid, Cube, Cone, Cylinder, Sphere, Prism, and Pyramids)
8.2.
Solid Shapes Around Us
8.3.
Vertices, Edges and Faces of Solid Objects
8.4.
Net of a 3-D Shape
9.
Multiplication (The Junk Seller)
9.1.
Multiplicand, Multiplier and Product
9.2.
Multiplication - Properties and Facts
9.2.1.
Order Property of Multiplication
9.2.2.
Grouping Property of Multiplication
9.2.3.
Multiplicative Property of One
9.2.4.
Multiplicative Property of Zero
9.2.5.
Distributive Property of Multiplication over Addition
9.2.6.
Identify the Property of Multiplication
9.3.
Multiplication by Multiples of 10
9.3.1.
Multiplication by 10, 100, and 1000
9.3.2.
Multiplication by a Multiple of 10, 100, and 1000
9.3.3.
Mixed Problems on Multiplication by Multiples of 10
9.4.
Multiplication Mentally
9.4.2.
Multiply 3-Digit Number by 1-Digit Mentally
9.5.
Word Problems on Multiplication
10.
Measurement of Capacity (Jugs and Mugs)
10.1.
Conversion of Metric Units of Capacity
10.1.1.
Conversion from Higher to Lower Units of Capacity
10.1.2.
Conversion from Mixed Units to Lower Units of Capacity
10.1.3.
Conversion from Lower to Higher Units of Capacity
10.2.
Addition and Subtraction of Capacity
10.2.1.
Addition of Capacity in Liters and Milliliters
10.2.2.
Subtraction of Capacity in Liters and Milliliters
10.3.
Word Problems on Capacity
10.3.1.
Word Problems on Addition of Capacity
10.3.2.
Word Problems on Subtraction of Capacity
11.
Circle (Carts and Wheels)
11.1.
Terms Related to a Circle
11.2.
Relationship Between Radius and Diameter of a Circle
12.
Fraction (Halves and Quarters)
12.1.
Fraction as a Part of a Whole
12.2.
Fractional Numbers and Fractions
12.3.
Numerator and Denominator of a Fraction
12.4.
Division as Fraction
12.5.
Fraction as Division
12.6.
Fractions on a Number Line
12.7.
Like and Unlike Fractions
12.8.
Unit Fraction
12.10.
Word Problems on Fractions
13.
Play with Patterns
13.1.
Rule for the Pattern
13.2.
Find the Sum of Consecutive Numbers
13.3.
Find the Missing Term in the Pattern
14.
Division (Tables and Shares)
14.1.
Divider, Quotient, Dividend, and Remainder
14.2.
Divide by 10, 100, 1000 etc
14.3.
Divide by Multiples of 10, 100, 1000 etc
14.4.
Long Division
14.4.2.
Divide a Number by a 2-digit Number (No Remainder)
14.4.4.
Divide a Number by a 2-digit Number (With Remainder)
14.5.
Division - Properties and Facts
14.5.1.
Division by One
14.5.2.
Division by the Number Itself
14.5.3.
Division by Zero
14.5.4.
Dividing Zero by a Number
14.6.
Word Problems on Division
14.6.1.
Word Problems - Division by a 2-Digit Number
14.6.2.
Word Problems - Division by a 3-Digit Number
15.
Measurement of Weight (How Heavy? How Light?)
15.1.
Conversion of Metric Units of Weight
15.1.1.
Conversion from Higher to Lower Units of Weight
15.1.2.
Conversion from Mixed Units to Lower Units of Weight
15.1.3.
Conversion from Lower to Higher Units of Weight
15.2.
Addition and Subtraction of Weights
15.2.1.
Addition of Weights
15.2.1.1.
Addition of Weights in Grams and Milligrams
15.2.1.2.
Addition of Weights in Kilograms and Grams
15.2.2.
Subtraction of Weights
15.2.2.1.
Subtraction of Weights in Grams and Milligrams
15.2.2.2.
Subtraction of Weights in Kilograms and Grams
15.3.
Word Problems on Weights
15.3.1.
Word Problems on Addition of Weights
15.3.2.
Word Problems on Subtraction of Weights
16.
Perimeter of Rectilinear Figures (Fields and Fences)
16.1.
Basic Definition of Perimeter
16.2.
Perimeter of Triangle
16.3.
Perimeter of a Rectangle
16.4.
Perimeter of a Square
16.5.
Perimeter of a Other Geometric Figures
17.
Data Handling (Smart Charts)
17.1.
Basic Definition of Data
17.2.
Pictographs
17.2.1.
Introduction to Pictograph
17.2.2.
Drawing Pictographs
17.2.3.
Interpreting Pictographs
17.3.
Bar Graphs
17.3.1.
Drawing Bar Graphs
17.3.2.
Interpreting Bar Graphs
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