Eric Nicholas K's answer to Nur Alya's Primary 5 Maths Whole Numbers Singapore question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
Part (a) goes something like this.

You can use a similar idea to do parts (b) and (e) on your own.

Parts (c) and (d) have nothing to do with this and are the easier questions.