5 types of operations are randomly proposed:
- addition of numbers less than 10,000
- subtraction of numbers less than 10,000
- multiplication of a number less than 10 000 by a number less than 100
- division of a number less than 1 000 by a number smaller than one-tenth of that number
- addition, subtraction and product of two integer integers between -10 and 10.
- addition of numbers less than 10,000
- subtraction of numbers less than 10,000
- multiplication of a number less than 10 000 by a number less than 100
- division of a number less than 1 000 by a number smaller than one-tenth of that number
- addition, subtraction and product of two integer integers between -10 and 10.
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