Math Practice 101
Homework Explained - Math Practice 101

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Grade 6 McGraw Hill Glencoe - Answer Keys
Chapter 3: Compute with Multi-Digit Numbers;Lesson 4: Multiply Decimals by Decimals


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HOW can number pattern be used to multiply by powers of 10?

Planets Each planet in our solar system orbits around the sun at a different distance from the Sun. Mercury orbits at an average distance of 28.6 million miles. One million is 1,000,000. What is 28.6 × 1,000,000?

Investigation

  • Question 3 (request help)

    Numbers like 10, 100, and 1,000 are called powers of 10 because they can be obtained by raising 10 to a power.
  • Question 5 (request help)
  • Move the decimal point the     number of places as the number of zeros in the power of 10.
  • Question 6 (request help)
  • Move the decimal point to the     when multiplying by a power of 10 that is less than 1.
  • Question 7 (request help)
     
  • Move the decimal point to the     when multiplying by a power of 10 that is greater than 1.
  • Question 8 (request help)

    Determine how many zeros are in 1,000,000 and move the decimal point in 28.6 the appropriate number of places.
  • There are     zeros in 1,000,000.
  • Question 8 (request help)

    28.6 million = 28.6 × 1,000,000

                     = 28.600000
                     = 28,600,000
  • Move the decimal point     places to the right.

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