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Question
primary 5 | Maths
| Whole Numbers
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Date Posted: 5 years ago
Views: 250
If larger number is twice that of smaller number,
larger number = 2 units
Smaller number = 1 unit
Difference = 2 units - 1 unit = 1 unit
Sum = 2 units + 1 unit = 3 units
3 units - 1 unit = 2 units
So the sum is 2 units bigger than the difference.
2 units = 108
1 unit = 108 ÷ 2 = 54
So smaller number is 54.
Larger number = 54 x 2 = 108
Product = 54 x 108 = 5832
larger number = 2 units
Smaller number = 1 unit
Difference = 2 units - 1 unit = 1 unit
Sum = 2 units + 1 unit = 3 units
3 units - 1 unit = 2 units
So the sum is 2 units bigger than the difference.
2 units = 108
1 unit = 108 ÷ 2 = 54
So smaller number is 54.
Larger number = 54 x 2 = 108
Product = 54 x 108 = 5832
Simultaneous equation helps
actually model drawing is more suitable for P5. Simultaneous equations usually used in unit-part method (seen mostly at P6/PSLE, with no x or y variables)
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