Objectives 


Students learn to add large numbers up to millions.
Students learn to comprehend simple word problems and apply addition skills to solve them.
Students learn to solve problems using addition skills.
Students learn to subtract numbers of up to millions.
Students learn to comprehend simple word problems and apply subtraction skills to solve them.
Students learn to solve problems using subtraction skills.
Practice addition and subtraction of numbers with four or more digits.
Find the missing number, digits or operation signs involving addition and subtraction.