AC Lim's answer to JO's Primary 3 Maths Singapore question.
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Hope this help
Date Posted:
4 years ago
Thanks.
Is there any way to find the pattern?
Is there any way to find the pattern?
Yes
Can use formula: F x (F+1) / 2
Example Figure 7 = 7x(7+1)/2 =28
Can use formula: F x (F+1) / 2
Example Figure 7 = 7x(7+1)/2 =28
If they give total triangle =91
Therefore
Fx(F+1)/2 =91
Fx(F+1) = 182
13 x 14 = 182
Answer figure 13 have 91 triangle.
Therefore
Fx(F+1)/2 =91
Fx(F+1) = 182
13 x 14 = 182
Answer figure 13 have 91 triangle.
Thanks alot.
Wow. That’s quite tough for P3.
Wow. That’s quite tough for P3.
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