Objectives 


Students learn to add twodigit numbers.
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 twodigit numbers.
Students learn to comprehend simple word problems and apply subtraction skills to solve them.
Students learn to solve problems using subtraction skills.
Students learn about properties of addition and subtraction  commutative, associative, additive and subtractive identities.
Practice addition and subtraction of twodigit numbers.
Solve simple problems using addition and subtraction skills for numbers up to two digits.