Liu HK's answer to Trisha's Primary 4 Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Liu HK
Liu Hk's answer
44 answers (Tutor Details)
1st
If you're having trouble with the multiplication in part (b) you can split 12 into 10 and 2. Add 10x135 and 2x135, that should make it easier.