The Order of Adding Two Numbers
Taken from Grade 4 Play! Maths.
The Order of Subtracting Two Numbers
Taken from Grade 4 Play! Maths .
Inverse Operations
Taken from Grade 4 Play! Maths.
Adding 3-digit numbers
Taken from Grade 4 Play! Maths.
Subtracting 3-digit numbers (without “borrowing”)
Taken from Grade 4 Play! Maths.
Subtracting 3-digit numbers (with “borrowing”)
Taken from Grade 4 Play! Maths.