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primary 6 | Maths | Fractions
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Cindy
Cindy

primary 6 chevron_right Maths chevron_right Fractions chevron_right Singapore

May I know why 1:2:3 must mutiply by 10? Thank you.
1 : 2 : 3
10:20:30
Shaded st Q=40%=0.4
No of unit shaded 0.4×20=8 units

Date Posted: 5 years ago
Views: 401
Henry Tan
Henry Tan
5 years ago
Hi Cindy, x10 so that you can get the answer easily. If not, 0.4 x 2 = 0.8 unit, will make your calculation more troublesome.
Cindy
Cindy
5 years ago
Oh, i see. Thank you so much.
Cindy
Cindy
5 years ago
So the area of shaded to unshaded is 8:24 or 8:32? Thank you.
Henry Tan
Henry Tan
5 years ago
Hi Cindy, area of unshaded is 2 + 12 +10 = 24.
8 : 24 simplify to 1 : 3 ( ans ).
Henry Tan
Henry Tan
5 years ago
32 is area of figure.
Cindy
Cindy
5 years ago
Great help, big thanks.
Cindy
Cindy
5 years ago
Hi, Henry. I would like to visit ezmath primary as you have mention to me. But I couldn't find the site. Can give me the link? Thank you.
Henry Tan
Henry Tan
5 years ago
Hi Cindy, you can go to YouTube and type in ezmath/primary then subscribe and go to playlist to choose the topics you want to learn. Sorry for the late reply.
Cindy
Cindy
5 years ago
Thank you so much for your help and support. Great guy!
Henry Tan
Henry Tan
5 years ago
Hope it will help you to guide your children.

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Henry Tan
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8 : 24