SG chevron_right Primary 4 chevron_right Number and Algebra

Help!!!

SG chevron_right Primary 4 chevron_right Number and Algebra

Pls help:)

SG chevron_right Primary 3 chevron_right Number and Algebra

I stuck! I can only get 82?4Can't understand the last part.

SG chevron_right Primary 3 chevron_right Number and Algebra

SG chevron_right Primary 3 chevron_right Number and Algebra

Need Some Help. Thank You.