IrelandGrade 4 Ireland School Math Subtraction Property of Zero
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Master this topic as part of Subtraction - Properties and Facts
3. Addition
4. Subtraction
7. Division
7.4. Long Division
9.1.1. Factors
9.1.1.1. Finding Factors of a Number
9.1.1.2. HCF (Highest Common Factor)
9.1.2. Multiples
9.1.2.1. Finding Multiples of a Number
9.1.2.2. LCM (Lowest Common Multiple)
9.2. Types of Numbers
9.2.1. Odd and Even Numbers
9.2.1.1. Even Numbers
9.2.1.2. Odd Numbers
9.2.2. Prime and Composite Numbers
9.3.1. Test Divisibility by 2
9.3.2. Test Divisibility by 3
9.3.3. Test Divisibility by 5
9.3.4. Test Divisibility by 6
9.3.5. Test Divisibility by 9
9.3.6. Test Divisibility by 10
10. Patterns
11. Rounding Numbers
11.1. Rounding Off Numbers
11.1.1. Rounding Off to the Nearest Ten
11.2. Estimating Sum
11.3. Estimating Difference
11.4. Estimating Products
12. Fractions
12.4. Division as Fraction
12.5. Fraction as Division
12.7. Equivalent Fractions
12.8. Comparison of Fractions
12.10. Unit Fraction
12.12.1. Addition of Like Fractions
12.12.2. Subtraction of Like Fractions
13. Decimals
13.1. Conversions
14. Money
14.1. Introduction to Currency
14.3. Express Money in Figures
14.4. Conversion of Money
14.4.4. Convert Cents into Dollars
14.7. Word Problems on Money
15. Measurement
15.1. Measurement of Length
15.1.2.1. Addition of Lengths
15.1.2.1.1. Addition of Lengths in Meters and Centimeters
15.1.2.1.2. Addition of Lengths in Kilometers and Meters
15.1.2.2. Subtraction of Lengths
15.1.2.2.1. Subtraction of Lengths in Meters and Centimeters
15.1.2.2.2. Subtraction of Lengths in Kilometers and Meters
15.1.3. Word Problems on Length
15.1.3.1. Word Problems on Addition of Lengths
15.1.3.2. Word Problems on Subtraction of Lengths
15.2. Measurement of Weight
15.2.2.1. Addition of Weights
15.2.2.1.1. Addition of Weights in Grams and Milligrams
15.2.2.1.2. Addition of Weights in Kilograms and Grams
15.2.2.2. Subtraction of Weights
15.2.2.2.1. Subtraction of Weights in Grams and Milligrams
15.2.2.2.2. Subtraction of Weights in Kilograms and Grams
15.2.3. Word Problems on Weights
15.2.3.1. Word Problems on Addition of Weights
15.2.3.2. Word Problems on Subtraction of Weights
15.3. Measurement of Capacity
15.3.3. Word Problems on Capacity
15.3.3.1. Word Problems on Addition of Capacity
15.3.3.2. Word Problems on Subtraction of Capacity
16. Unitary Method
17. Geometry
17.2. Using a Ruler
17.4. Types of Lines
17.4.1. Straight and Curved Lines
17.4.3. Open and Closed Shapes
17.5. Polygons
17.5.1. Understanding Polygons
17.5.2. Name the Polygon
17.6. Circle
20. Symmetry
20.1. Introduction to Symmetry
20.3. Symmetry Around Us
20.5. Symmetry in Alphabets
20.6. Symmetry in Numerals
21. Time
21.1. Clock
21.1.2. Measuring Time
21.1.3. 24-Hour Clock Time
21.1.4. Use of 'AM' and 'PM'
21.1.5. Addition and Subtraction of Time
21.2. Calendar
21.2.1. Days of the Week
21.2.2. Months of the Year
21.2.4. Writing Dates
21.2.5. Word Problems on Calendar
22. Data Handling
22.1. Basic Definition of Data
22.2. Pictographs
22.3. Bar Graphs
22.3.1. Drawing Bar Graphs
22.3.2. Interpreting Bar Graphs
Global
Australia
Bahrain
Bangladesh
Brazil
Cambodia
Canada
China
Europe
France
Germany
Hong Kong
India
Indonesia
Italy
Jamaica
Japan
Kuwait
Malaysia
Mauritius
Mexico
Nepal
Netherlands
Oman
New Zealand
Pakistan
Philippines
Qatar
Russia
S Korea
Saudi Arabia
Singapore
South Africa
Sri Lanka
Thailand
Turkey
UAE
UK
USA
Vanuatu
Vietnam