Free · Printable · TEKS 8.12D · Personal Financial Literacy
TEKS 8.12D Worksheets — Grade 8 Calculate and compare simple interest and compound
470+ Texas-aligned practice questions on this exact Grade 8 standard. Print at home or practice online with a built-in AI tutor. No sign-up, no paywall.
What TEKS 8.12D says: Calculate and compare simple interest and compound interest earnings.
This page has 470+ practice questions tagged specifically to TEKS 8.12D. Below: a sample of 8 with answers and explanations so you can preview the worksheet before printing. Every question goes through an AI quality gate (gpt-4o for content review, Claude Sonnet 4.5 for math verification) before publishing.
Cognitive demand: high. Typical question shape: Simple vs compound interest over N years.
Find the simple interest earned on $2000 at 7% per year for 3 years.
- 421
- 420 ✓
- 422
- 419
Why: I = P·r·t = 2000 × 0.07 × 3 = 420.
Find the compound interest earned on $1900 at 3% compounded annually for 2 years.
- 115.70
- 115.81
- 115.71 ✓
- 115.72
Why: A = P(1+r)^t = 1900(1.03)^2 = 2015.71. I = A − P = 115.71.
Find the compound interest earned on $800 at 3% compounded annually for 2 years.
- 48.73
- 48.72 ✓
- 48.82
- 48.71
Why: A = P(1+r)^t = 800(1.03)^2 = 848.72. I = A − P = 48.72.
Find the simple interest earned on $1400 at 2% per year for 4 years.
- 114
- 112 ✓
- 113
- 111
Why: I = P·r·t = 1400 × 0.02 × 4 = 112.
Find the compound interest earned on $300 at 5% compounded annually for 2 years.
- 30.75 ✓
- 30.76
- 30.74
- 30.85
Why: A = P(1+r)^t = 300(1.05)^2 = 330.75. I = A − P = 30.75.
Find the compound interest earned on $2000 at 3% compounded annually for 2 years.
- 121.7
- 121.9
- 121.8 ✓
- 122.8
Why: A = P(1+r)^t = 2000(1.03)^2 = 2121.8. I = A − P = 121.8.
Find the simple interest earned on $2000 at 3% per year for 2 years.
- 120 ✓
- 122
- 119
- 121
Why: I = P·r·t = 2000 × 0.03 × 2 = 120.
Find the compound interest earned on $1400 at 8% compounded annually for 2 years.
- 232.97
- 232.95
- 233.06
- 232.96 ✓
Why: A = P(1+r)^t = 1400(1.08)^2 = 1632.96. I = A − P = 232.96.
Common questions about TEKS 8.12D
What is TEKS 8.12D?
TEKS 8.12D is a Grade 8 Personal Financial Literacy standard from the Texas Essential Knowledge and Skills. The standard says: Calculate and compare simple interest and compound interest earnings.
How many TEKS 8.12D practice questions are available?
470+ practice questions tagged to TEKS 8.12D. All free to print or practice online. We pull a fresh set each time you print a worksheet so your kid doesn't see the same questions twice.
What kind of questions test TEKS 8.12D on the STAAR?
Simple vs compound interest over N years. TEKS 8.12D is a high-cognitive-demand standard — multi-step reasoning is expected.
Where do these questions come from?
Generated by our AI pipeline, then independently quality-gated by two cross-vendor models (gpt-4o for content review, Claude Sonnet 4.5 for math verification) before publishing. Every question is tagged to TEKS 8.12D and modeled on real STAAR item shapes. No typos, no wrong answer keys, no broken explanations.