Multiples, factors and word problems.
Primes, divisibility and mental strategies.
Using the grid method and short multiplication.
Division of big numbers vertical layout.
Multiples and factors; mental multiplication and division strategies.
Short multiplication: 4-digit numbers and money.
Short division with 3- and 4-digit numbers.
Mental multiplication and division.
Problems with multiples, factors and scaling.
To use grid, short and long multiplication.
Division problems with short division.
To Solve long multiplication problems.