Maths : percentages

Percentages a d equivalence of percentages fractions and decimals
Finding easy percentages without a calculator by either referring to
fractions - halff, quarter, or building up by finding 10% and doubling
and halfing
Percentages of money, length, weight - being careful about converting
units kg/g, m/cm/mm, £/p
Word problems using percentages in a variety of ways including inverse
operations