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Mental arithmetic

Index - Options

2523 + 1572 = 
4159 + 6595 = 
2831 + 589 = 
316 + 2719 = 
1547 + 1840 = 
9578 + 9918 = 
8013 + 3252 = 
4057 + 7945 = 
4054 + 6584 = 
703 + 6647 = 

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

Time: Errors:

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Operations
Lower limit
Upper limit
 Addition
 Subtraction
 Multiplication
 Division
 Square
 Root

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