Class 4 Maths - ICSE
Measurement - Weight
In the Class 4 ICSE Mathematics chapter on Measurement of Weight, students learn about standard units used to measure how heavy objects are. This chapter introduces grams (g) and kilograms (kg), teaching children how to read weighing scales and understand that 1 kilogram equals 1000 grams. Students practice converting kilograms to grams and vice versa, as well as adding and subtracting weights with and without regrouping. Mastering this chapter is essential for building a strong foundation in daily life measurements and scoring well in ICSE math examinations through word problems.
Start Learning FreeKey Concepts
Standard Units of Weight
We use grams (g) to measure light objects like a pencil and kilograms (kg) to measure heavy objects like a school bag.
Conversion of Kilograms to Grams
To convert kilograms to grams, multiply the number of kilograms by 1000, since 1 kg = 1000 g.
Conversion of Grams to Kilograms
To convert grams to kilograms, divide the total grams by 1000, separating the quotient as kg and remainder as g.
Addition of Weight
Weights are added by grouping kilograms under kilograms and grams under grams, carrying over if grams exceed 1000.
Subtraction of Weight
Weights are subtracted by aligning kg and g columns, borrowing 1 kg (1000 g) from the kilograms column if needed.
Important Formulas
Board Exam Info
In the ICSE Class 4 Mathematics exam, this chapter typically carries around 5 to 8 marks. Common question types include unit conversions, simple addition and subtraction word problems involving market purchases, and choosing the correct unit of weight for specific objects.
Frequently Asked Questions
How do I convert kilograms into grams?
Multiply the given kilogram value by 1000. For example, 3 kg = 3 × 1000 = 3000 g.
Why do we use 1000 for conversion?
The prefix 'kilo' means thousand, so one thousand grams make up one standard kilogram.
How should I arrange weights in addition and subtraction sums?
Always write separate columns for kilograms (kg) and grams (g) to avoid mixing up the units.
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