Simple Interest | Doodle Math: Twist on Color by Number Worksheets


Make financial literacy and decimals review and practice a blast with this print-and-go Doodle Math activity. Includes four levels with 36 questions total to practice simple interest calculations using I = Prt including simple interest, ending balance, rates, and investment time. Great for the TEKS 7.13.E and TEKS 8.12.D personal financial literacy standards. Each correct answer unlocks doodle patterns to complete cute hedgehog and forest images. If your students love color by number or color by code, they’ll love Doodle Math!

Why you'll love this


✅ Level 1: Calculate simple interest. (1 page, 9 questions)

✅ Level 2: Calculate ending balance after simple interest is added. (1 page, 9 questions)

✅ Level 3: Calculate rates when given ending balance, initial deposit, and investment time. (1 page, 9 questions)

✅ Level 4: Calculate investment time when given simple interest, rates, and ending balance. (1 page, 9 questions)

✅ Hedgehog image sheet for Level 1 & Level 2 with designated sections for doodling. (1 page)

✅ Forest image sheet for Level 3 & Level 4 with designated sections for doodling. (1 page)

✅ Answer key. (6 pages) 

✅ Optional student formula sheet. (1 page)

Great for…

⭐ Back-to-School, Spiral Review Lessons

⭐ Emergency Sub Plans

⭐ Homeschool Activities

⭐ Homework & Independent Practice

⭐ Learning Centers & After School Math Programs

Reviews for Doodle Math products…

⭐⭐⭐⭐⭐ Karen S. - “Just a good fun activity during the holidays for practicing skills! Great product!”

⭐⭐⭐⭐⭐️ Christine M. - “I put this out as an extra credit assignment for my 8th graders at the end of the square and cube roots unit. The students who chose to do it seemed to enjoy the "doodle" part because it was different than a typical color by number task. Thank you!”

⭐⭐⭐⭐⭐ Carly S. - “My students really loved this and it worked really well in my classroom!”

Want to save 40% or more?

Consider a Doodle Math grade level bundle. It's a whole year of review or sub plans:

✴️ Grade 5 BUNDLE

✴️ Grade 6 BUNDLE

✴️ Grade 7 BUNDLE

✴️ Grade 8 BUNDLE

✴️ Grade 6 - 8 BUNDLE

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