# What is the most important step when adding fractions?

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1. Word cloud
120 seconds
What is the most important step when adding fractions?
2. Slide
60 seconds
Fractions are parts of a whole - they are numbers that are not whole numbers. To add fractions, make sure the bottom numbers (denominators) are the same and then add the top numbers (numerators). Simplify the answer if the denominators and numerators don't match.
3. Slide
60 seconds
Fraction: A fraction is a number that represents part of a whole. It can be written as a ratio or in decimal form. Adding Fractions: To add fractions, the denominators must be the same. Then you add the numerators together and put the answer over the denominator. Reducing Fractions: To reduce a fraction, you must divide the numerator and denominator by the same number until the fraction can't be reduced anymore.
Concepts:
4. Slide
60 seconds
The concept of fractions was first created by the ancient Egyptians around 4,000 years ago. When adding fractions, you can use the 'Common Denominator' method to convert the fractions to have the same denominator and then add the numerators. Fractions are also known as 'rational numbers', because the numerator and denominator can be used to represent a ratio of two numbers.
Did you know?
5. Open question
300 seconds
How do you know when you need to add fractions?
6. Open question
300 seconds
7. Open question
300 seconds
What fraction addition strategies have you used in the past?
8. Open question
300 seconds
9. Drawings
450 seconds
Brain break: Draw a funny pickle riding a unicycle while juggling bananas.
10. Drawings
1260 seconds
Question: Mrs. Johnson has 3/4 of a pie. Her husband has 2/3 of a pie. How much pie do they have altogether? Clues: • Remember to find the least common denominator to add fractions. • The least common denominator of 3/4 and 2/3 is 12. • To add fractions, you must have the same denominator. In pairs: Select and solve one of the tasks: A. Work with a partner to draw a picture of Mrs. Johnson and her husband's pies. B. Explain how the fractions are added together to find the total amount of pie.
11. Poll
60 seconds
What is the result of adding 1/4 and 1/4?
• 2/4
• 1/2
• 1/8
• 3/4
12. Poll
60 seconds
What is the sum of 3/5 and 2/5?
• 6/10
• 7/10
• 5/5
• 1
13. Open question
180 seconds
Work together in pairs: What is the easiest way to add fractions with different denominators?