🌺 Articles in this section are designed to solve the problems to find the value of a mystery.
🌺 Children must apply the knowledge of math to add, subtract, multiply, divide and combine the calculations to solve the problem.
🌺 Difficulty levels as well as the number of calculations is also increasing from operations plus or minus then to replicate, from level 1 to level 8.
🌺 Once completed, children can practice to improve the investment think and calculate their speed.
Last updated on Jul 19, 2016
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