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Mass - Measurements Grade 4 Math

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GRADE 4 MATHEMATICS REVISION QUESTIONS

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Mass

Student's Activity 1

When you go the shop, you buy some items in terms of their mass. Some items are usually written how heavy they are.
For instance, Elizabeth found this packet of maize flour in her kitchen. What is mass of the maize flour when full?

Answer

You can also be asked: "How heavy was the packet of maize flour when full"
As indicated on the packet, when full of maize flour, it has a mass of 2 kilograms.
Mass can be given in terms of grams (g) or kilograms (kg).
Always remember that 1000 grams (g) = 1 kilogram (kg)

Addition of Mass Involving Kilograms

Practice 1

Mary bought 5kg of maize flour and 2kg of sugar. How many kilograms of maize flour and sugar did she buy?

Answer

Maize flour: 5kg
Sugar: 2kg
5 + 2 = 7kg

Practice 2

Our teacher went to the market and bought the following items:
  • Maize flour: 2kg
  • Wheat flour: 2kg
  • Sugar: 1kg
  • Rice: 2kg
  • Beans: 2kg
How many kilograms of items did she buy altogether?

Answer

2 + 2 + 1 + 2 + 2 = 9kg


Subtraction of Mass Involving Kilograms

Practice 1

Work out the following:
30 kg - 13kg

Answer

Data Handling
Answer: 17kg

Practice 2

Jecinta bought 35kg of maize flour and gave 16kg to her sister. How many kilograms of maize flour was she left with?

Answer

Data Handling
Answer: 19kg

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