# Super Math Adventure - Subtraction

## Super Math Adventure - Subtraction Math Game

Content Skill: Subtraction
Common Core State Standards: CCSS.Math.Content.2.OA.B.2 - Fluently subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

## Description

There are invaders coming! Help the cow to stop them from reaching Earth by solving subtraction problems. Solve the problem before the aliens can reach the ground!

## Instructions

Step 1
You can mute the game by clicking the sound icon in the lower left corner. To start the game, click "PLAY."

Step 2
There are four levels of difficulty. For what ever number you pick, the highest number in the subtraction problem won't be higher than that number. Select an option and click "OK."

Step 3
Finish a level to unlock the next one!

Step 4
There are two ways to play the game: normal and arcade. In the normal version, you click on the answer to the addition problem and the cow will zap the invader. In the arcade version, you use the arrow keys to aim the cow under the falling alien and then click on the correct answer to fire the laser.

Step 5
As the alien comes down, click on the answer to the subtraction question that the alien is carrying. The cow's laser will zap them! If the alien gets too close to the ground it will fire at the cow and fly away. As you zap more aliens, the bar on the right side of the screen will fill up. When it gets near the top, a big alien will show up! Answer three subtraction problems to zap it.

Step 6
Complete all five levels and you'll win! Click the orange home button to go back to the main menu. Go save the Earth!