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Secondary 1 | Maths
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Secondary 1 chevron_right Maths chevron_right Singapore

Please help me check working and answer for both questions.
Thank you

Date Posted: 4 years ago
Views: 306

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Beverly
Beverly's answer
122 answers (Tutor Details)
1st
remember that when you multiply two negatives (-) x (-) it becomes a (+) positive
Beverly
Beverly
4 years ago
my bad for 8(b), it should be -0.667 in numerals instead
CV
CV
4 years ago
8b) can I write - 0.67?
Beverly
Beverly
4 years ago
normally if the question does not state, i will always leave it in 3 significant figures. that's the instruction in the o level mathematics 2020 syllabus.

"Unless stated otherwise within a question, three-figure accuracy will be required for answers. This means that four-figure accuracy should be shown throughout the working, including cases where answers are used in subsequent parts of the question. Premature approximation will be penalised, where appropriate"

hope this helps!
CV
CV
4 years ago
Thank you so much
Clear explanation
Thanks
Beverly
Beverly
4 years ago
you're welcome