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Thema:
The use of methods for common fractions
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The purpose
To look for historical data
homework
Addition of common fractoins
Subtraction of common fractions
Independent work
conclusion
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The numerator of a fraction may be less than the denominator may be
equal to the denominator, and could be larger than the denominator.
Example: - proper fraction, because 2<3, 4<9, 3<10
therefore, proper fraction less than unity.
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Example : proper
fraction,
Because, 5=5; 11>6; 12>8; 23>12; 45=45
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orally
№1. which one is the proper fraction, and what is improper fraction.
№2. 4:5;
6:5; 1:3; 9:2; 12:7; 3:5; read the division as a fraction.
Answer: proper fraction,
improper fraction