Addition and Subtraction

Name: Addition and Subtraction
Author: SpeedOut

Practice simple addition and subtraction expression

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Addition and Subtraction is a browser extension that helps you practice simple addition and subtraction expression. It is like a quiz extension.

FEATURES

Quick random expressions
Easy, Medium, Hard, and Custom modes
Addition, Subtraction, or random operations
Save user settings to the cloud for access from other devices.
Leaderboard
Dark/Light theme
Open-source

if you need more feature on this app, highly requested to create an issue on our GitHub repository https://github.com/biplobsd/as/issues tab.

Add-on

By:

SpeedOut

Users:

13 -1

Version:

1.2 Last updated: 2023-07-26

Creation date:

2023-07-26

Risk:

Permissions:

identity
storage

Size:

418.34KB

URLs:

Website ,Privacy policy

Full description:

Source:

Edge Add-on Store

Data ingested on:

2025-07-09

Ranking

# 20,027 ▼ 216

Other rankings

#2801 in Entertainment ▼ 13 #26 in quiz keyword 17 #66 in source keyword 29 ▲ 1 #72 in medium keyword 13 ▼ 2

Extension safety

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Addition and Subtraction does not require any sensitive permissions.

Risk impact analysis details

Risk likelihood

Risk likelihood measures the probability that an Edge add-on may turn malicious. This is determined by the publisher and the Edge add-on reputation on Edge Add-on Store, the amount of time the Edge add-on has been around, and other signals about the Edge add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing an Edge add-on.

Addition and Subtraction is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****

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