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primary 5 | Maths
| Whole Numbers
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Word problem topic 4 operations
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box: 1u
o: 25-1u
total: 11
box: 1u
a: 11-1u
3 . (11 - 1u) = 25-1u
33 - 3u = 25 - 1u
1u = 8/2 = 4
(a)
mass of o is 21 kg
(b)
mass of box = 4 kg
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