The Minus Mission game is on the Arcademic Skill Builder site.The game starts as drops of green slime fall from the sky. The slime droplets display basic subtraction problems. The correct answers to the problems appear one at a time in a robot with lasers at the bottom of the screen. Players move the robot containing the correct answer to the matching problem in the green slime and fire the lasers at the drop of slime before it reaches the bottom of the screen. Difficulty levels vary; along with game speed, students can set the number range from 0 to 5 or higher. Playing the game reinforces subtraction skills.
This subtraction game is located on the Kids Numbers site. The game takes place in a lake with people fishing from a boat. A subtraction problem is displayed above the boat as fish displaying various answers swim by. Players move the fishing line to catch the fish with the correct answer. The game continues with different problems to solve. Difficulty levels range from easy to medium to hard. Playing the game reinforces mastery of subtraction skills and improves recall speed.
This game is similar to the "Who Wants to be a Millionaire?" game show and is part of the Gamequarium site. Players are given 12 different subtraction problems ranging in difficulty from single- to multi-digit problems. Players must chose the correct answer from four options. For each problem they solve correctly, the players move up the money line, starting from $500 to $1 million. Students review basic subtraction skills and use estimation skills to solve multi-digit problems.
The Subtraction Memory game materials are available on the Super Teacher Worksheets site. Two to four players are given printable cards with subtraction problems and answers. Players place all of the cards face down on a table or desk and take turns turning over a problem and an answer card at the same time. When the answer card gives the solution to the problem card, players keep that pair of cards. Players return pairs in which the problem and answer do not match. The game continues until all matching pairs are found. The player with the most matching pairs wins.