Knowing your times tables is really helpful with mental maths and problem solving. The 8 times table is double the 4 times table. The 4 times table is double the 2 times table. That’s a lot of ...

The binary number \(1001\) can be calculated in denary. To do this put the number into the table. \(1\) in the \(8\) column means there is an \(8\) \(0\) in the \(4\) column means there are no \(4 ...