Sri LankaGrade 5 Sri Lanka School Math Perimeter of Polygons
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Master this topic as part of Area and Perimeter
1.2.1. Successor of a Number
1.2.2. Predecessor of a Number
1.3. n Digit Numbers
1.4. Place of a Digit
1.6.1. Addition of Large Numbers
1.6.2. Subtraction of Large Numbers
1.6.4. Division of Large Numbers
4.1.1. Finding Factors of a Number
4.1.5. Types of Numbers
4.1.5.1. Odd and Even Numbers
4.1.5.2. Prime and Composite Numbers
4.1.5.2.1. Definition
4.1.5.2.2. Composite Numbers
4.1.5.2.3. Prime Numbers
4.1.5.2.4. Properties of Composite and Prime
4.1.5.3. Twin Primes
4.1.5.4. Co-Primes
4.2.1. Test Divisibility by 2
4.2.2. Test Divisibility by 3
4.2.3. Test Divisibility by 4
4.2.4. Test Divisibility by 5
4.2.5. Test Divisibility by 6
4.2.6. Test Divisibility by 7
4.2.7. Test Divisibility by 8
4.2.8. Test Divisibility by 9
4.2.9. Test Divisibility by 10
4.2.10. Test Divisibility by 11
4.4. HCF and LCM
4.4.1. HCF (Highest Common Factor)
4.4.2. LCM (Lowest Common Multiple)
4.4.3. Properties of LCM and HCF
4.4.4. Word Problems on HCF and LCM
5. Fractions
5.2. Unit Fraction
5.4. Equivalent Fractions
5.6. Compare Fractions
5.7.1. Addition of Fractions
5.7.1.1. Addition of Like Fractions
5.7.1.2. Addition of Unlike Fractions
5.7.1.3. Addition of Mixed Fractions
5.7.2. Subtraction of Fractions
5.7.2.1. Subtraction of Like Fractions
5.7.2.2. Subtraction of Unlike Fractions
5.7.2.3. Subtraction of Mixed Fractions
5.8.1. Multiplication of Fractions
5.8.1.3. Use of 'OF'
5.8.2. Division of Fractions
6. Decimals
6.2. Place Value Chart
6.6. Comparing Decimals
6.7. Ordering Decimals
6.8.1.1. Convert Decimals to Proper Fractions
6.8.1.3. Convert Decimals to Mixed Fractions
6.9.1.1. Addition of Decimals
6.9.1.2. Subtraction of Decimals
6.10.1. Multiplication of Decimals
6.10.1.2. Multiplying a Decimal by a Whole Number
6.10.1.3. Multiplication of Two/Three Decimals
6.10.2. Division of Decimals
6.10.2.3. Division of a Decimal by a Whole Number
6.10.2.4. Division of a Decimal by a Decimal
6.10.2.5. Division of a Whole Number by a Decimal
7.1. Rounding Off Numbers
8. Measurement
8.1.2.1. Addition of Lengths
8.1.2.2. Subtraction of Lengths
8.1.3.1. Multiplication of Lengths
8.1.3.2. Division of Lengths
8.2.2.1. Addition of Weights
8.2.2.1.1. Addition of Weights in Grams and Milligrams
8.2.2.1.2. Addition of Weights in Kilograms and Grams
8.2.2.2. Subtraction of Weights
8.2.3.1. Multiplication of Weights
8.2.3.2. Division of Weights
9. Average
10. Percentage
11. Time
12. Money
12.1. Conversion of Money
12.1.1. Convert Dollars to Cents
12.1.2. Convert Cents to Dollars
12.2.1. Addition of Money
12.2.2. Subtraction of Money
13. Geometry
13.2. Angles
13.2.1. Introduction to Angles
13.2.4. Types of an Angle
13.3. Types of Lines
13.3.1. Parallel Lines
13.3.2. Perpendicular Lines
13.3.3. Intersecting Lines
13.3.4. Identifying the Type of Line
13.4. Set Squares
13.6. Triangles
13.7. Circle
13.7.1. Terms Related to a Circle
13.7.4. Concentric Circles
15. Volume
16. Data Handling
16.1. Pictographs
16.2. Bar Graphs
16.2.1. Drawing Bar Graphs
16.2.2. Interpreting Bar Graphs
16.3. Pie Charts
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