Place Value Unlocked
K-2 Place Value Learning App
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Place Value Unlocked teaches K–2 students how numbers work — from grouping tens and ones all the way to hundreds, expanded form, comparing numbers, reading and writing numbers, and rounding.
Built by educators with 20+ years of classroom experience, this app uses interactive base ten blocks, visual place value mats, and a world-by-world progression to make abstract number concepts concrete and memorable.
7 Worlds of Learning:
World 1: Why We Group — discover how and why we organize numbers into tens and ones
World 2: Tens and Ones — identify the tens and ones digits in two-digit numbers
World 3: Expanded Form — break numbers into their parts (40 + 7 = 47)
World 4: Reading & Writing Numbers — connect numerals to their word forms
World 5: Comparing Numbers — use greater than, less than, and equal to
World 6: Hundreds, Tens, and Ones — extend place value understanding to three-digit numbers
World 7: Rounding — round to the nearest ten and hundred
Place Value Master Challenge:
Complete all 7 worlds and take on the ultimate 40-question timed challenge. Earn your Certificate of Achievement from One On One Tutoring Service!
Designed for Young Learners:
Every tip uses language K–2 students already know — counting by tens, adding, and grouping. No multiplication. No shortcuts. Just deep understanding built the right way.
Worlds 1 and 2 are free. Unlock all 7 worlds for a one-time purchase of $2.99.
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Improved user experience.
The developer, One On One Tutoring Service, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- One On One Tutoring Service, Inc.
- Size
- 60.2 MB
- Category
- Education
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Made for Ages 6–8
- In-App Purchases
Yes
- Unlock All Worlds $2.99
- Copyright
- © 2025 One On One Tutoring Service, Inc.