See Nabilah Azeman's answer to Dini's Primary 5 Maths Whole Numbers Singapore question

Nabilah Azeman's answer to Dini's Primary 5 Maths Whole Numbers Singapore question.

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find the common denominator and eliminate accordingly. :)

Date Posted: 6 years ago

Comments 2 add a comment

Dini

6 years ago

How do you get the ×3 and ×8?

Nabilah Azeman

6 years ago

for part (a) in order to get the price of a pen, you should cancel off the files in the equation. the common multiple of 3 and 8 is 24, so you multiply it accordingly and eliminate out of the equation. now, you have just the pens to calculate for. :)

part (b) works the same. common multiple of 10 and 7 is 70, so you multiply it across both equation to eliminate the pens.