Mastering 5th Grade Math
Like Duolingo, but for Mastering 5th Grade Math. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free forever · No credit card · iPhone & Android

Key ideas in Mastering 5th Grade Math
- Basic multiplication facts are the foundation for larger problems
- The total number of zeros in the factors is appended to the basic product
- Applying basic facts and place value patterns to solve large multiplication problems
- Large numbers can be decomposed into tens and ones
- The final product is the sum of all partial products
- Connecting the steps of the area model to the partial products in the standard algorithm
- The digits in the tens place represent groups of ten
- The 'placeholder' is a shift in place value, not a random rule
- Division determines how many equal-sized groups fit into a total
- Context determines if a remainder should be rounded, partitioned, or ignored
- The total is the dividend and the group size is the divisor
- Remainders represent the 'leftovers' that don't fit into a full group
- Division is a cycle of estimating, multiplying, and subtracting
- The process continues until the remainder is smaller than the divisor
- Deciding how to handle remainders based on the real-world context
- The conceptual sequence of the long division process as repeated subtraction/grouping
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Mastering 5th Grade Math the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
If you know that 4 x 3 = 12, what is the first step to solving a larger problem like 400 x 30?
Get it right to open this lesson and 23 more in the app.
Where Mastering 5th Grade Math takes you
Stop feeling stuck and start solving problems like a pro. Learn the tricks to handle big numbers and shapes so you can tackle real-world challenges with confidence.
- 1
Solve Problems Like a Pro
- Multiplying Large Numbers with Ease
- Dividing Big Groups Fairly
- Adding and Subtracting Fractions
- Using Parentheses to Order Your Steps
- Solving Real-World Word Problems
- 2
Spot Patterns and Measure Your World
- Finding the Volume of a Box
- Plotting Points on a Treasure Map
- Comparing Decimals to the Nearest Cent
- 3
The Secrets Behind the Numbers
- How Place Value Shifts with Tens
- Why We Use Powers of Ten
- Converting Inches to Feet and Beyond
- Classifying Shapes by Their Rules
3 sections · 12 units · 24 levels. Built to play, not to enroll.
You pick the voice
Mastering 5th Grade Math is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Mastering 5th Grade Math today.
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