Mad Maths Minutes
Adding 1/10/100
Subtracting 1/10/100
Add/subtract 100 to/from 3-digit numbers
Add/subtract multiples of 100 to/from 3-digit numbers
Add a 1-digit number to a 3-digit number.
Subtract a 1-digit number from a 3-digit number.
Add or subtract a 1-digit number to or from a 3-digit number.