Instruction 
Meaning 
Example(s) 
Write the given expression. 
Searches for the given expression in the text of the problem and writes the expression. 
Evaluate 2*(37). Write the given expression. 2*(37) 
Substitute. 
Replaces all variables by their value. 
2+x where x=4 Substitute. 2+4 
Evaluate the parenthesis. 
Searches for numbers in parenthesis and nested parenthesis and removes them. 
2+((4))
Remove parenthesis.
2+4 
Add. 
Searches from left to right for an addition of two numbers and evaluates it. 
2*3+5+6+7
Add.
2*3+11+7 
Subtract. 
Searches from left to right for a subtraction of two numbers and evaluates it. 
2*3+567
Subtract.
2*31+7 
Multiply. 
Searches from left to right for a multiplication of two numbers and evaluates it. 
2+3*56*7
Multiply.
2+156*7 
Divide. 
Searches from left to right for a division of two numbers and evaluates it. 
3+10/56/7
Divide.
3+26/7 
Evaluate the power. 
Searches from left to right for a power, where the base is a number and the exponent is a counting number and evaluates it. 
3+3^2+4^3
Evaluate the power.
3+9+4^3 
Evaluate the square root. 
Searches from left to right for the square root of a number and evaluates it. 
3+sqrt(9)+sqrt(2)
Evaluate the square root.
3+3+sqrt(2) 
Add number and number. 
Searches from left to right for the sum of the given numbers and evaluates it. 
(3+4)*(5+6+7)
Add 6 and 7.
(3+4)*(5+13) 
Add number to number. 
Searches from left to right for the sum of the given numbers in reverse order and evaluates it. 
(7+6)*(5+6+7)
Add 7 to 6.
(7+6)*(5+13) 
Subtract number from number. 
Searches from left to right for the difference of the given numbers and evaluates it. 
(34)*(56+7)
Subtract 6 from 5.
(3+4)*(11+7) 
Multiply number by number. 
Searches from left to right for the product of the given numbers and evaluates it. 
(3*4)/(5*6+7)
Multiply 5 by 6.
(3*4)/(30+7) 
Divide number by number. 
Searches from left to right for the quotient of the given numbers and evaluates it. 
(3/4)*(125/5+7)
Divide 125 by 5.
(3/4)*(25+7) 
Evaluate number to the power of number. 
Searches from left to right for a power, where the base is the first number and the exponent is the second number and evaluates it. 
(3^4)*(3^2+7)
Evaluate 3 to the power of 2.
(3^4)*(9+7) 
Evaluate the square root of number. 
Searches from left to right for the square root of the given number and evaluates it. 
sqrt(4)*(sqrt(9)+7)
Evaluate the square root of 9.
sqrt(4)*(3+7) 
Do the arithmetic. 
Evalutes sums, differences, products, quotients, powers ans square roots of numbers in expressions and equations. 
2*(3+3)2. Do the arithmetic. 10 
Convert unit unit to unit.

Convert a unit to a different unit. 
2in+3cm Convert unit in to cm. 5.5cm+3cm 
Combine like terms. 
Combines like terms. 
3*x+6*x+7 Combine like terms. 9*x+7 
Replace expression expression with expression. 
Searches from left to right for the expression and replaces it with the other expression. 
3*(1+x) Replace expression 1+x with x+1. 3*(x+1) 
Replace name. 
Replace a variable with the expression. 
a+b Replace a with x+1 x+1+b 
Replace expression with law law. 
Use a law to replace an expression with another expression. 
x*(2*y+5)17 Replace x*(2*y+5) with law 3 (x*(2*y)+x*5)17 
Replace expression with expression with law number. 
Use a law to replace an expression with another expression. 
x*(2*y+5)17 Replace x*(2*y+5) with x*(2*y)+x*5 with law 3. (x*(2*y)+x*5)17 
Replace expression with expression. 
Replace an expression with another expression. 
x*(2*y+5)17 Replace x*(2*y+5) with x*(2*y)+x*5. (x*(2*y)+x*5)17 
Commute expression and expression. 
Commutes two terms in an sum or two factors in a product. 
1+x+4*y Commute x and 4*y. 1+4*y+x 
Remove parenthesis. 
Use order of operations to remove parenthesis. 
(2+x)+5 Remove parenthesis. 2+x+5 
Set parenthesis. 
Use order of operations to set parenthesis. 
2+x+5 Remove parenthesis. (2+x)+5 
Do the arithmetic. 
Evalutes sums, differences, products, quotients, powers ans square roots of numbers in expressions and equations. 
2*(3+3)2*x=5/2 Do the arithmetic. 122*x=2.5 