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primary 5 | Maths | Whole Numbers
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Lena
Lena

primary 5 chevron_right Maths chevron_right Whole Numbers chevron_right Singapore

Pls help to explain & solve.

Date Posted: 2 years ago
Views: 371
sstrike
Sstrike
2 years ago
excess / shortage

$6+$9 = $15
8-3 = 5
$15÷5 = $3
5 : 3 = $15 : $9
2×$9= $18 (Ans)
or
$9+3×$3= $18 (Ans)

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Bryce
Bryce's answer
10 answers (A Helpful Person)
There are two methods to this answer. You may choose the one you understand better. Though model may be inefficient at some times, it is good to visualise the problem sometimes.
Lena
Lena
2 years ago
Thank you.
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JADE LEE ZI QI
Jade Lee Zi Qi's answer
8 answers (Tutor Details)
M is markers

8 markers - $6 = total she have
3 markers + $9 = total she have

1 into 2

8marker - $6 = 3 marker + $9
1 marker = 3

Total she have

M into 1

8(3) - 6 = $18
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sstrike
Sstrike's answer
5332 answers (A Helpful Person)
excess / shortage