Practice Algebra as Language in Math

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

The perspective that algebra is a formal language with syntax and grammar for expressing mathematical ideas and relationships precisely.

Just as English has grammar, algebra has rules for combining symbols meaningfully.

Showing a random 20 of 50 problems.

Example 1

medium
Express in algebra: 'The product of two consecutive integers is 12 more than twice their sum.'

Example 2

medium
Express: 'The square of the sum of a and b' vs 'The sum of the squares of a and b'. Are they equal?

Example 3

easy
Translate 'eight less than three times a number n' into an algebraic expression.

Example 4

easy
Translate 'five more than a number x' into algebra.

Example 5

medium
Read f:R→R, f(x)=x2 in plain English.

Example 6

medium
Translate Pythagoras's relation 'the square on the hypotenuse equals the sum of the squares on the other two sides' with legs a,b and hypotenuse c.

Example 7

challenge
Express 'a function f is injective' in formal logic.

Example 8

easy
Translate 'half of a number decreased by 4' into algebra.

Example 9

medium
A taxi charges $3 plus $2 per mile. Write the cost C for m miles as an equation.

Example 10

medium
A student writes 'x=3=y' to mean x=3 and y=3. Why is this a grammar violation?

Example 11

easy
Translate 'the sum of three consecutive even integers' starting from n into an expression.

Example 12

hard
Read ∑k=1nk=n(n+1)2 as a sentence.

Example 13

easy
Translate 'a number is positive' into an inequality with variable x.

Example 14

easy
Translate 'x is between 2 and 8 inclusive' into a compound inequality.

Example 15

easy
Read the expression a+bc in words.

Example 16

medium
Read (x+1)2−(x−1)2 in words, then simplify.

Example 17

medium
Translate the constraint 'a number is no more than twice another, and they sum to 12' into a system using x,y.

Example 18

easy
Is the expression '3+×4' grammatically valid algebra?

Example 19

easy
Write an equation: 'A number decreased by 7 equals 15.'

Example 20

medium
Read ∣x∣≤3 in words and express it as a compound inequality without absolute value.