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primary 5 | Maths | Area & Volume
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Amir
Amir

primary 5 chevron_right Maths chevron_right Area & Volume chevron_right Singapore

Please help me where I went wrong, thank you so much

Date Posted: 3 years ago
Views: 288
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Tutor May Ho, Ex MOE Trained
Tutor May Ho, Ex Moe Trained's answer
63 answers (Tutor Details)
1st
The pattern for squares are counting numbers. Use the pairing method -- number of pairs x (the 1st number x last number) to work out ' 1+2+3+4.... +98+99+100. Hope you understand.