Substitute

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In this app the questions are carefully graded from easy up to difficult in 41 steps.

 

Given the value of the variables, evaluate an expression

 

Simple expressions like:

  • x + 7
  • 11 − x
  • 5x
  • 18/x
  • a + 4b
  • ...
  • 4a × 3b − 4ac
  • Brackets:
  • a(b + c)
  • (x + 7)(x + 6)
  • ...
  • 4(1 − 7x)/(x + 5)

Exponents:

  • 4x²
  • (2x)²
  • x²(x −1)²
  • ...
  • 2(5x²)²/5x³

Nested brackets:

  • 4((a − (b − c))
  • ...
  • c −(b −(a − (b c)))

 

Useful for practicing many algebra skills

A question

A tutor screen

Nested ScreenShot20150320at10015pm

A worked example

Show30

A tutor screen

Exponents

A response

yes65
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