Partitioning and column addition.
Mental subtraction including counting up.
Mental addition and subtraction.
Subtraction: frog with 3-D numbers.
To mentally add and subtract near multiples.
To mentally add and subtract 1-digit numbers.
To perform written subtraction.
Adding money using column addition.
To count up to find change and differences.
Column addition: 4-digit numbers.
Subtraction strategies; written methods.
Column addition, including money.
Expanded & compact column subtraction.
Column subtraction, 3- & 4-digit numbers.
To use appropriate strategies to add and subtract.
Column addition and subtraction with 3- and 4-digit numbers.
To choose methods for addition and subtraction problems.