SG chevron_right Primary 6 chevron_right Fractions

What's the moe method of doing this?

SG chevron_right Primary 5 chevron_right Fractions

SG chevron_right Primary 5 chevron_right Fractions

SG chevron_right Primary 5 chevron_right Fractions

Help!

SG chevron_right Primary 6 chevron_right Number and Algebra

I can solve this but can teach me a way that I can easily explain to P6 child? Thanks!