Find Missing Number Addition

About this app

In this app there is an addition problem at the top of the screen with the second number blank. The app voice says (for instance) “Ten plus what is sixteen? Click the correct answer." There are four numbers at the bottom of the screen, and the student should click the correct choice from among them. If the student clicks the correct number, the voice says “Yes, ten plus six is sixteen." Setting Training This option is selected by default. When this is selected, the program can be used to train the student. Test Select this option to measure the student's progress. The “Report" button is in the Setting. The prompts are disabled for "Test” mode. Report This displays results of the Test. Vertical Addition If this is selected then the number statement at the top of the screen will be arranged vertically. Horizontal Addition If this is selected then the number statement at the top of the screen will be arranged horizontally. Prompt(Blink) This is checked by default. If the student fails to find the correct answer within ten seconds, the program guides him/her to the correct choice by making the correct choice blink. This is available for “Training" mode but disabled for “Test" mode. Uncheck this box if the prompt is not needed in “Training" mode. Congratulatory Animation If this is selected, then any and all of the numbers in this box will be used. To deselect this choice, click it again and selection will be ended. Select Random Numbers If this is selected, then the program will choose the numbers to be used in the problems.

The current app version updated with the new age rating.

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1. First observed Aug 27, 2026 · 9:14 AM $2.99