Inflation and loans

Equivalent rates, present value, real rate and constant amortization and annuity (Price) loans

The Inflation and loans unit belongs to the Fractions, decimals and finance section of Math Mental and has 15 lessons: equivalent rates, present value, real rate and constant amortization and annuity (Price) loans.

Practice this unit

Sample questions

In the lesson, numbers change every session and the solution appears after you answer.

$M = 1\,000 \cdot 1.1^{2}$
Step by step
1. $\displaystyle 1.1^2 = 1.21$
Answer $1\,210$
$(1 + 20\%)(1 - 20\%) - 1$
Step by step
1. $\displaystyle 1.2 \cdot 0.8 = 0.96$
Answer $-4\%$
$A_{\text{SAC}}:\; PV = 12\,000,\; n = 4$
Step by step
1. $\displaystyle A = \frac{12\,000}{4}$
Answer $3\,000$

Lessons in this unit

Equivalent rate Lesson, 8 questions
Semiannual rate by the root Lesson, 8 questions
Present value Lesson, 8 questions
Practice: compounding Practice, 10 questions
Real rate Lesson, 8 questions
Nominal rate Lesson, 8 questions
Price before the adjustment Lesson, 8 questions
Constant amortization: principal repayment Lesson, 8 questions
Constant amortization: installment interest Lesson, 8 questions
Constant amortization: installment amount Lesson, 8 questions
Annuity loan: installment Lesson, 8 questions
Annuity loan: principal repayment Lesson, 8 questions
Annuity loan: outstanding balance Lesson, 8 questions
Review: inflation and loans Practice, 12 questions
Unit test 12 questions

Your first lesson takes five minutes

Create an account, pick where to start and keep your streak from today.

Start learning

Sample questions

Step by step

Step by step

Step by step

Lessons in this unit

Your first lesson takes five minutes