• Skip to primary navigation
  • Skip to main content
  • Skip to footer

Doorway Online

Free accessible educational activities that learners will find easy to use independently.

  • Home
  • About
  • Thanks
  • Download
  • Contact
  • Literacy
    • First Phonics
    • Letter and Number Formation
    • Speller 2
      • 1200 Common Words
    • Old Activities >
      • First Blends
      • First Sounds
      • First Words
  • Number
    • Old Activities >
      • Add and Subtract to 10
      • Add and Subtract to 100
      • Count Me In
      • Number Table
      • Odd and Even
      • Up to 10
  • Time and Money
    • Cashing In
    • Old Activities >
      • About Time
      • Supermarket
      • Till We Meet Again
  • Typing
    • Text Type
    • Old Activities >
      • TT3 Phase 2
      • TT3 Phase 3
  • Memory and Matching
    • Old Activities >
      • Find the Pairs (Pelmanism)
      • Moving Targets
      • Same or Different

Add and Subtract to 100

The suite uses animated tens and units “blocks” to give learners experiences from place value to the full notation of addition and subtraction bridging ten. Explore: See the effect of adding units or tens and taking then away. Make the Number: An activity with a learning mode and an assessment mode. What’s the number? Identify the number made by the blocks. Sums with blocks Addition and Subtraction including the bridging of ten. Written Sums: Notation of sums, including carrying and decomposition.

Note: As Adobe Flash is no longer in use worldwide, if you wish to continue to use this version, you will need to download the Doorway Activity Pack.

Footer

Social

Facebook
Facebook
fb-share-icon
Twitter
Visit Us
Follow Me
Tweet
RSS Feed
fb-share-icon
WhatsApp

Font Resizer

A Decrease font size. A Reset font size. A Increase font size.

This site is provided by the Doorway Accessible Software Trust, a charity registered in Scotland, no. SC042166. Website by Thomas Lee.
By using this website you are agreeing to our Terms of Service and Privacy Policy.
Call Scotland University of Edinburgh
Manage your privacy

To provide the best experiences, we and our partners use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us and our partners to process personal data such as browsing behavior or unique IDs on this site and show (non-) personalized ads. Not consenting or withdrawing consent, may adversely affect certain features and functions.

Click below to consent to the above or make granular choices. Your choices will be applied to this site only. You can change your settings at any time, including withdrawing your consent, by using the toggles on the Cookie Policy, or by clicking on the manage consent button at the bottom of the screen.

Functional Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes. The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
Statistics

Marketing

Features
Always active

Always active
Manage options Manage services Manage {vendor_count} vendors Read more about these purposes
Manage Consent options
{title} {title} {title}
Manage your privacy
To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behaviour or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes. The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
Statistics

Marketing

Features
Always active

Always active
Manage options Manage services Manage {vendor_count} vendors Read more about these purposes
Manage Consent options
{title} {title} {title}