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Mental arithmetic

Index - Options

9 + 2 = 
2 + 6 = 
4 * 4 = 
15 / 5 = 
13 - 9 = 
72 / 8 = 
18 / 2 = 
18 / 6 = 
5 + 6 = 
9 + 10 = 

When all exercises have been calculated correctly, a picture of an animal appears.

Time: Errors:

Options

Operations
Lower limit
Upper limit
 Addition
 Subtraction
 Multiplication
 Division
 Square
 Root

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