Where Are We Now?

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# Where Are We Now? - PowerPoint PPT Presentation

Where Are We Now?. We have learned how to: compare and order decimals. estimate by rounding and using compatible numbers. solve equations containing decimals. write numbers in scientific notation. Where Are We Going?. We will: use divisibility rules.

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## PowerPoint Slideshow about 'Where Are We Now?' - elina

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Presentation Transcript
Where Are We Now?
• We have learned how to:
• compare and order decimals.
• estimate by rounding and using compatible numbers.
• solve equations containing decimals.
• write numbers in scientific notation.
Where Are We Going?
• We will:
• use divisibility rules.
• write numbers as products of primes.
• find the GCF and LCM of pairs of numbers.
• compare and order fractions.
• simplify fractions.
• convert fractions to decimals.
• convert decimals to fractions.
Maryland Content Standard

6.5.3:use number theory concepts of primes, factors, multiples, and rules of divisibility to show number relationships

### Least Common Multiple

A multiple of a number is the product of the number and a whole number.

We have seen that numbers can have common factors. They also have common multiples.

List the multiples of 4:

List the multiples of 6:

Common multiples of 4 and 6 include 12 and 24. The LCM is ____________.

Study Tip!!!!!

Don’t list too many multiples of one number before beginning the other list. You may write many more than you need

Find the LCM of 8 and 10.

8: 8, 16, 24, 32, 40, 48, 56

10: 10, 20, 30, 40, 50

LCM = __________________

In one part of a musical composition, the triangle player in an orchestra plays once every 12 beats. The tympani player plays once every 9 beats. How often do they play together?

(Hint: You need to find the LCM of 12 and 9.)

A Problem for You

A local restaurant is offering a free meal to every 25th customer on Valentine’s Day and a bouquet of roses to every 12th customer. Which customer will be the first to get both a free meal and a free bouquet?

Happy Valentine’s Day

To ALL of my Sweethearts!