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Similar to Operations with rational numbers
Operations with rational numbers
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- 2. Any number thatcan be made by dividing one integer by another. The word comes from "ratio". This means that rational numbers include positive and negative numbers, whole numbers, fractions and decimals.
- 3. Two fractions thatstand for the same number
- 4. Mixed Numbers ImproperFractions
- 5. The sum ofa whole number and a fraction
- 6. & These areexamples of mixed numbers
- 7. A fraction witha numerator greater then the denominator NUMERATOR denominator
- 8. These are examplesof improper fractions &
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- 14. Adding Fractions SubtractingFractions Multiplying Fractions Dividing Fractions
- 15. Adding fractions requiresa common denominator To find the common denominator between fractions simply multiply the denominators and this is the common denominator. this number may be large so try and find a number that all denominators will divide into evenly.
- 16. However this numbermay be large so try and find a number that all denominators will divide into evenly. Adding fractions requires a common denominator To find the common denominator between fractions simply multiply the denominators and this is the common denominator.
- 17. We need tofind a C.D. in order to add these fractions. If we multiply the denominators that is a big number…but both 6 and 12 divide evenly (without a remainder) into 12. The first fraction already has a denominator of 12 so we leave it alone but what do we have to multiple the second denominator by in order to change it to 12? If you said 2…you are right!
- 18. If you multiplythe denominator by 2 you MUST multiply the numerator by two also! Remember: whatever you do to the bottom you must do to the top. Once you have common denominators…add the numerator and KEEP the Common Denominator.
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- 20. Same rule…you haveto get a common denominator before you subtract the numerators!
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- 23. Multiplying fractions iseasy Multiple the numerators Multiple the denominators
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- 26. Dividing fractions requiresone more step Keep the first fraction the same Change the multiple to divide And FLIP the second fraction
- 27. When the fractionis “flipped” it is called the INVERSE
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