Math Fact Check: Rule of 72
Rule of 72 fact check: students use the compound interest formula to test how well the rule estimates doubling time at different interest rates, then compare with a table on the back.
- Grades
- Grades 2–6, Elementary, Middle School
- File type
- Preparation
- Print ready
- Topic
- Rule of 72, math worksheet
- Resource types
- Worksheets & Printables, Worksheets
- Preparation
- Print ready
About this resource
What's inside this resource
This printables/worksheets/worksheets-by-subject/math-worksheets">math worksheet has a Fact Check theme. Students will be presented with a math problem or math fact to consider.
On the back side of the worksheet, students will observe a fact check for the math encounter.
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In the classroom
Teaching tips & learning objectives
Learning objectives
- Calculate doubling time with the compound interest formula
- Judge how accurate the Rule of 72 is at different rates
Skills covered
- Solving exponential equations — finding doubling time, including with logarithms
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Resource details
Concepts & topics
Core concepts
Core concepts
- Compound interest
- Exponential growth
- Rule of 72
- Logarithms
Topics
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