Problems appear one at a time. Your goal is to answer them as fast as you can. Each time you enter the answer correctly, your dragster or horse will go faster. You race against your five previous best races which are replayed on screen-six lanes with six dragsters or six riderless horses in all. The sooner you reach the finish line, the better your score will be. (You can switch between riderless horses and dragsters between races.)

Start racing to math success with the Quarter Mile!

Decimals Decimal computing topics

Decimals: adding
Decimals: subtracting
Decimals: add / sub
Decimals: multiplying
Decimals: dividing
Decimals: mul / div
Decimals: add / sub / mul / div

Percents Converting topics

Converting fractions to percents
Converting percents to fractions
Converting fractions to decimals
Converting decimals to fractions
Converting between percents and decimals
Converting percents, decimals and fractions

Computing with percents topics

Estimating percents
Finding 50%, 100% and 200% of a number
Finding percents of numbers related to 100
What is N% of B?
A is what percent of B?
A is N% of what number?
Combination of percent computation topics

Estimation Special percent topics

Changing a number by a percent: lev. 1
Changing a number by a percent: lev. 2
Changing a number by a percent: lev. 3
Estimating the percent increase

Estimating with decimals topics

Finding a decimal: level 1
Finding a decimal: level 2
Finding a decimal: level 3

Estimating with money topics Estimating savings at sales Integers Integer introduction topics

Integers: comparing sizes
Integers: signs only -- adding and subtracting
Integers: signs only -- multiplying and dividing
Integers: signs only -- add / sub / mul / div

Integer computing topics: level 1

Integers: adding
Integers: subtracting
Integers: adding and subtracting
Integers: multiplying
Integers: dividing
Integers: multiplying and dividing
Integers: add / sub / mul / div

Integer computing topics: level 2

Integers: intermediate adding
Integers: intermediate subtracting
Integers: intermediate adding and subtracting
Integers: intermediate multiplying
Integers: intermediate dividing
Integers: intermediate mul and div
Integers: intermediate -- add / sub / mul / div

Integer computing topics: level 3

Integers: advanced adding and subtracting
Integers: advanced multiplying and dividing
Integers: mixed operations (-2 + 3 x -4)

Equations Equation introduction topics Evaluating with integers Simplifying number phrases Equations with whole numbers topics

Equations: whole numbers -- adding (a + 2 = 7)
Equations: whole numbers -- subtracting (a - 2 = 2)
Equations: whole numbers -- adding and subtracting
Equations: whole numbers -- multiplying (2a = 18)
Equations: whole numbers -- dividing (a/2 = 8)
Equations: whole numbers -- multiplying and dividing
Equations: whole numbers -- add / sub / mul / div
Equations: whole numbers -- two operations (2a + 1 = 7)

Equations with integers topics

Equations: integers -- adding (a + 2 = -4)
Equations: integers -- subtracting (a - 3 = -2)
Equations: integers -- adding and subtracting
Equations: integers -- multiplying (-3a = 15)
Equations: integers -- dividing (a/3 = -9)
Equations: integers -- multiplying and dividing
Equations: integers -- add / sub / mul / div
Equations: integers -- two operations (2a - 1 = -3)
Equations: fractional coefficients (3/4a = -9)