Erfana Beevee Binte Hassan Shariff's answer to kinn yong's Primary 5 Maths Singapore question.

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Erfana Beevee Binte Hassan Shariff
Erfana Beevee Binte Hassan Shariff's answer
241 answers (Tutor Details)
1st
Whenever equal amount is added or removed, DIFFERENCE ALWAYS REMAINS THE SAME. Use that heuristic concept to solve.