ADDITION AND SUBTRACTION OF WEIGHTS IN KGS-P.1

This unit is about the addition and subtraction of weights.it also involves word problems concerning weights

Addition of weight in kg.

Examples

i) 7kg + 2kg = 9kg

10kg + 5kg = ___________kg

Activity

  1. 5kg + 6kg =____ kg       6. 10 kg + 10 kg= ___ kg
  2. 12kg + 7kg =___ kg         7. 7 kg + 8 kg = ____kg
  3. 9kg + 3kg =____ kg         8. 6 kg + 9 kg = ____ kg
  4. 8kg + 4kg =___   kg          9. 5 kg + 7 kg = ___ kg
  5. 11kg + 6kg = __ kg          10. 12 kg + 0 kg = __ kg

More addition of weight in kg( vertical )

add weights

 

LESSON 5 and 6

iii)  Addition of weight in word problems.

  1. Tom bought 6kg of meat. His father bought 7kg of meat. How many kilograms of meat did they buy altogether?
  2. Anne bought 26kg of sugar. Alice bought 10kg of sugar. How many kilograms of sugar do they have altogether?

Subtraction of weight in kg

Examples:

1)       5kg – 3kg = ____________kg

11)      9kg – 1kg = ____________ kg

111)   10kg – 7kg = _____________kg

Add more numbers for practice.

Subtracting in vertical form;

 

Add more numbers for practice.

Word problems

Examples 

  • I bought 6kg of meat. I cooked 1kg of meat. How many kilograms of meat remained?
  • Musa had 60kg of sweet potatoes. He sold 20kg of sweet potatoes. How many kilograms of sweet potatoes remained?

Pupil’s activity:

  • I had 8kg of tomatoes; I used 2 kg 0f tomatoes to cook. How many kg of tomatoes remained?
  • A shopkeeper had 42 kg of rice and sold 10 kg of rice. How many kg of rice remained?
  • Ann had 8kg of meat and she cooked 1kg of meat. How many kg of meat remained?
  • Moses had 17kg of oranges and he gave away 5kg of oranges. How many oranges remained?
  • A boy had 55kg of sugar and 12kg of sugar poured. How many kg of sugar were left?
  • What is 7kg less 3kg?
  • Subtract 34kg from 68kg.
  • 49kg take-away 22kg equals
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