Arithmetic

do basic arithmetic

125 + 375

1.05 * 12,000

7^3

find square roots

sqrt 1801

Fractions

add fractions

1/6 + 5/12 + 3/4

multiply fractions

3/8 * 2/7

do exact arithmetic with fractions

1/4 * (4 - 1/2)

Percentages

convert a fraction to a percentage

convert 1/6 to percent

calculate a percentage of a quantity

30% of 8 miles

compute a discounted price

$29.95 - 15%

Place Value

show place values for a number

place values of 6135

find the value of a particular digit of a number

value of the digit 3 in 23904

Mathematical Word Problems

solve a word problem

Rachel has 17 apples. She gives 9 to Sarah. How many apples does Rachel have now?

Rhonda has 12 marbles more than Douglas. Douglas has 6 marbles more than Bertha. Rhonda has twice as many marbles as Bertha has. How many marbles does Douglas have?