Many pupils mishandle standard form;
To enter 7 × 10² into your calculator you should use the 
button (also displayed as [EE] or [Exp]):
followed by followed by 
To enter 2.7 eg. Divide by 3 × 10^2 becomes ÷ 3 × 10^2 instead of ÷ (3 × 10^2). Many also unaware of the standard form button at the bottom of the calculator [×10x] which would eliminate the need to insert brackets as the calculator recognises it as a single number2.7×10–19 into your calculator:
This is considered as one number by your calculator – i.e treated as if it had brackets around it.
Remember in maths notation:
1 / 2 × 10² is not the same as 1 / (2 × 10²)
eg. Divide by 3 × 10^2 becomes ÷ 3 × 10^2 instead of ÷ (3 × 10^2). Many also unaware of the standard form button at the bottom of the calculator [×10x] which would eliminate the need to insert brackets as the calculator recognises it as a single number.
| Basics |