Understand and use the relationship between the four operations, and the principles (not the names) of the arithmetic laws.
Use brackets.
Use factors.
Use closely related facts.
Extend written methods to:
long multiplication of a three-digit by a two-digit integer;
short division of TU or HTU by U (mixed-number answer);
division of HTU by TU (long division, whole-number answer);
short division of numbers involving decimals.