# Base 10 Blocks K-1

> Base 10 Blocks K-1 (iPhone/iPad app by Classroom Focused Software.)

- Source: https://appshunter.io/ios/app/base-10-blocks-k-1/id1080130079 (this page in markdown: same URL + `.md`)
- Developer: [Classroom Focused Software](https://appshunter.io/developer/406741679)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 10.0 · 37 MB
- Languages: American English
- Released: 2016-02-03
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/base-10-blocks-k-1/id1080130079/reviews.md

## What is Base 10 Blocks K?

Free until March 1, 2016.

Practice representing 2-digit numbers 10-99. Designed specifically for use in K-1 classrooms. Drag 10s and 1s blocks one at a time to the work area to represent the target number displayed. OR, drag the Blocks into place and then identify the number. Feedback is provided at any time by tapping the “checkmark” button at the top of the screen.

Options include selecting a specific target number or letting the app randomly select a target from the range you select.

Common Core: Kindergarten
CCSS.MATH.CONTENT.K.NBT.A.1
Work with numbers 11-19 to gain foundations for place value.

Common Core: 1st Grade  
CCSS.MATH.CONTENT.1.NBT.B.2 
Understand place value. Understand that the two digits of a two-digit number represent amounts of tens and ones.


## Version history (last 3 releases)

### 1.0.6 — 2018-10-07

• Updated to support iOS12 - thank you for your patience.
• A few other minor tweaks
• As time allows, I'd enjoy hearing how you're using this app in the classroom and at home.

### 1.0.5 — 2016-09-20

Fixed a screen display problem seen when using the app under iOS 10.

### 1.0 — 2016-02-03

No release notes.

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## More apps by Classroom Focused Software

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All apps by Classroom Focused Software: https://appshunter.io/developer/406741679

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-17.*