Ng Tze Yang's answer to Lucas's Primary 4 Maths Singapore question.

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Ng Tze Yang
Ng Tze Yang's answer
16 answers (Tutor Details)
1st
We have 7826 = 7800 + 26
Since 26 is smaller than 50,
7826 would be closer to 7800 than 7900, as
you need to add a larger value of 74 to get 7900 than subtracting 26 to get 7800.

So we round down to the nearest hundred:

7800