Adding and Subtracting Standard Form (The origins of the decimal point)

Students decode a paragraph to find out about the origins of the decimal point that is used today. The puzzle relies on a knowledge of powers of ten. Devices within the puzzle allow students to self monitor their work and correct errors (answers included). For more number resources search for: Place Value - powers of 10, decode the adoption of negative numbers or decode the origins of our decimal number system.

Key words: Standard form, Units, Tens, tenths, hundredths, powers of 10, place value, message, decode, origin, decimal point, decimals, worksheet, history of mathematics, math, maths, (unlock untangle understand).