What assessed numeracy skills do I need to learn in my D&T lessons?

a) Length   →   b) Weight   →   c) Perimeter   →   d) Capacity   →   e) Area   →   f) Volume   

What other mathematics skills can I learn using this site?

g) Arithmetic   →   h) Angle   →  i) Trigonometry  →   j) Algebra   →  k) Geometry

Addition & Subtraction

Addition is about putting things together, combining them to make a 'new whole'. By adding two numbers together you are carrying out a 'sum'. The 'sum' of a series of numbers is all those numbers added together. Addition is the opposite of subtraction. 

Subtraction is about breaking a whole number into smaller parts. By subtracting two numbers, one from another, the result is called the 'difference'. Thus the 'difference' of a subtraction is what is left over when you take away (subtract) one number from another. Subtraction is the opposite of addition. 

Multiplication

Multiplication is a way of carrying out repeated addition really quickly, skipping all those steps to get the the answer much quicker than would be possible if you were adding many numbers together manually, one at a time. Multiplication is the opposite of division. 

Multiplication using the 'grid technique'

The grid technique is a really visual and easy to understand way of carrying out long multiplications.
This tool will carry out and help you learn how to do multiplications up to 9999 x 9999. 

Division

Division is a way of carrying out repeated subtraction really quickly, skipping all those steps to get the the answer much quicker than would be possible if you were taking away many numbers together manually, one at a time. Division is the opposite of multiplication.