To place 3- and 4-digit numbers on a line.
Place value in 4-digit numbers.
Place value additions: 4-digit numbers.
To deepen understanding of place value.
To add and subtract powers of 10, numbers > 1000.
To use place value in calculations.
To place and round 4-digit numbers on lines.
To investigate negative numbers in temperature.
To count in 25s and 1000s; Roman numerals.