Solve

1
Solve

• At Dinos Café, Dino can seat 4 people at each
  square table. A group of 50 people reserved one
  long table for a celebration. How many square
  tables would Dino need to push together to seat
  all these people?

2
Scientific Notation

• Chapter 3
• Lesson 4

3
What is it?

• An easier way to write large numbers
• 350,000,000,000 3.5 x 1011
• A product of a number greater than or equal to 1
  but less than 10 and a power of 10.
• 3.5 x 1011
• 3.5 is greater than or equal to 1 but less than
  10
• 1011 is a power of 10

4
Write in standard form

• 4.36 x 109
• Remember- just get the number for standard form
• Move the decimal to the right the same number of
  places as the exponent
• Since the exponent is 9, move the decimal 9
  places to the right
• Fill in the ditches with zeros

5

• 4.36 x 109
• 4,360,000,000

4 3 6
0 0 0 0 0 0 0
6
Try These

• 8.3 x 103
• 8,300
• 6.7 x 106
• 6,700,000
• 5 x 1012
• 5,000,000,000,000

7
Write in scientific notation

• Write as 2 factors
• The first factor is greater than or equal to 1
  but less than 10
• The second factor is a power of 10 in exponent
  form

8
How to

• Move the decimal to the left until you have
• A number greater than or equal to 1 but less than
  10 and a power of 10.
• That is your first factor
• Count the number of times you moved the decimal
• That is your exponent

9

• 7,560,000
• 7 5 6 0 0 0 0
• Move the decimal until you have a number greater
  than or equal to 1 but less than 10 and a power
  of 10.
• Count the amount of times you moved the decimal
  6 times this is the exponent
• 7.56 x 106

10
Try these

• 8,900
• 8.9 x 10 3
• 678,000,000
• 6.78 x 108
• 20,000
• 2 x 104
• 42,780,000
• 4.278 x 107