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Secondary 1 | Maths
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chifuyu_.
Chifuyu_.

Secondary 1 chevron_right Maths chevron_right Singapore

evaluate the following without the use of calculator

Date Posted: 1 year ago
Views: 173

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CY Lew
Cy Lew's answer
89 answers (A Helpful Person)
1st
Hi Chifuyu,

I think your problem is due to lack of understanding in manipulating negative numbers. Remember the following:

1. (+) x (+) = +()
2. (+) x (-) = -()
3. (-) x (+) = -()
4. (-) x (-) = +()

Happy learning. CY
chifuyu_.
Chifuyu_.
1 year ago
Hello thank you for your explaination ! I absolutely understand the formula now :)