Lesson 1: For 2 number in total is 2010. Know their area is the smallest, look for large numbers.Lesson 2: For 1 in which the decimal integers and decimal fraction has a 1-digit number. Find some of them know that some of it by the arithmetic rather than its number.Lesson 3: a class of 30 students, 8 students study French, 12 students in Spanish and 3 students learn both languages. Asked how many students do not learn both languages?
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