Arithmetic/Numeracy resources.*4**4**1*BASICS*2*associativity, etc.*4*base 10 - hundreds, tens, units*1*ARITHMETIC*2*addition*4*subtraction*4**4*multiplication table*4*multiplying decimals*4*multiplying large numbers*4*multiplying by 10, 100, 1000*4**4*division - short division*4*division - long division*4*division - dividing a decimal*4*division - dividing by a decimal*4*dividing by 10, 100, 1000*1*ORDER OF OPERATIONS*2*bodmas*1*FRACTIONS*2*fractions - the basics*4*wholes, halves, thirds fifths*4*fractions, decimals, piecharts - an Excel spreadsheet*4**4*simplifying fractions*4*simplifying fractions using prime factors*4*improper to mixed number*4*mixed number to improper*4**4*adding/subtracting fractions*4*multiplying fractions*4*dividing fractions*4*dividing fractions- alternative method*4**4*calculating fractions of amounts*4*algebraic fractions*4*converting fractions to percentages*4*converting fractions to decimals*4*fractions, percentages, decimals you must know*1*PERCENTAGES*2*percentages*4*wholes, halves, thirds fifths as percentages*4*converting percentages to decimals*4*converting percentages to fractions*4*calculating vat*1*DECIMALS*2*converting decimals to fractions*4*converting decimals to percentages*4*fractions, decimals and percentages - an Excel spreadsheet (274 kb)*1*INTEGERS*2*integers*4*adding negative numbers*4*subtracting negative numbers*4*multiplying integers*4*dividing integers*1*RATIO*2*Ratio*4*Equivalent ratios*4*Equivalent ratios - Vedic maths*4*Proportion*4*Sharing in Proportion*4*Map scales*4*ratio - direct proportion*4*ratio - indirect proportion*4*the rule of 3*1*ROUNDING*2*rounding to nearest - an Excel spreadsheet*4*rounding decimals*4*rounding to decimal places  - an Excel spreadsheet*4*significant figures*1*ROUNDING*2*Squares and Square Roots*1*STANDARD FORM (SCIENTIFIC NOTATION)*2*standard form*4*tolerance*1*TIME*2*time units*4*12 and 24 hour clock*4*12 hour clock*4*24 hour clock*4*converting 12 hour clock to 24 hour clock*4*converting 24 hour clock to 12 hour clock*4*calculating time differences*1*MEASUREMENTS AND UNITS*2*measurements - length conversions*4*measurements - mass conversions*4*measurements - volume conversions*1*SOCIAL ARITHMETIC*2*by the rule of 3*4*profit and loss*4*percentage profit and loss*4*back / reverse percentage*4*vat*4*appreciation*4*depreciation*4*payslips*4*net pay*4*overtime*4*superannuation*4*income tax*4*national insurance*4*utility bills*4*loans*4*hire purchase*4*insurance*4*simple interest*4*compound interest*4*foreign exchange*4**4**4*UK site but relevant to any pupils covering mathematics.*4**4* Extremely useful for teachers of Maths/Mathematics.