To play online press the screenshot above and then the start button.
Or you can download the game and play offline.

# Interactive algebraic systems with country flags.

 "Math Flags" is a free online game to study and solve popular algebraic equation systems with flag pictures. Find the missing number in the last line of the combinational country flags equations. Fun educational game, suitable for online lessons and interactive classes. Free online game. Fun educational math game. The Math Knowledge Board include 3 mathematical frustration puzzles with country flags to solve. The game is part of the Interactive Math School educational tools. Fun math quiz for all ages. Test for the smartest.

This math class include the following combination systems:
• Combination 1:
• USA + USA + USA = 6
• USA + UK + UK = 34
• EU + EU + UK = 54
• USA + UK + EU = ?
• Combination 2:
• Japan + Japan + Japan = 33
• China + Japan + China = 45
• China + Russia + Russia = 45
• Japan + China + Russia = ?
• Combination 3:
• Bulgaria + Bulgaria + Bulgaria = 3
• Spain + Spain + Bulgaria = 39
• France + Spain + France = 43
• Bulgaria + Spain + France = ?
Program code by Ogo Bob. Pictures by pixabay.com.

## How to play Math Flags.

 You get 4 combinational lines of country flags and the sum of the first 3 lines is shown on the picture. Your task is to solve the last line, where you need to do simple addition, division, multiplication or subtraction. When you are done, enter your answer in the imput field with the question mark and press Enter. You must solve all 3 mathematical frustration puzzles to win the game and get a Knowledge Level.

Knowledge Achievements:
Master popular system equations and get +1 Knowledge Level.
Difficulty: Hard.

### Class subject: Math equations with 3 unknowns.

 This is another example of combination system equation with overall 3 unknown values that have been very popular lately. To solve it we need simple math and logic skills. The first line usually consist of 3 same country flags. So we need to divide the number at the end of the equation by 3 to find the value of the first flag. The second line include always one of the first country flags and another two same country flags. So we subtract the value of the first flag from the number at the end of the equation and then divide the result by 2. Now we have the value of the second flag. The third line include one flag from the second line and again two new country flags, but in different order. Then again we subtract the the value of the second flag and devide the result by 2. When we have the values of all 3 country flags, the last fourth line is to add them to one another by simple addition and find the missing number. This app include the following country flags: USA, UK, EU, Japan, China, Russia, Bulgaria, Spain and France.

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