Decimal Points in Products

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Division or Multiplication by the Reciprocal?

(1). Below are two sets of problems. First solve the problems labeled A, and then solve the problems labeled B. Then compare your results.

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(2). Use your work in the previous problems to find each of the following. Explain your reasoning.

(a). 720 · (0.1)

(b). 720 · (0.01)

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(3). Find each product below. Show your reasoning.

(a). 36 · (0.1)

(b). 24.5 · (0.1)

(c). 1.8 · (0.1)

(d). 54 · (0.01)

(e). (9.2) · (0.01)

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Multiply two Decimal Numbers.

  • Check the numbers 1 through 6 to see the steps in multiplying decimal numbers.​

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(A). Find the value of each product below by writing and reasoning with an equivalent expression with fractions.

(1). (0.3) · (0.02)

(2). (0.7) · (0.05)

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(B). Calculate the value of each expression below by writing the decimal factors as fractions, then writing their product as a decimal.

(1). (0.01) · (0.02)

(2). (0.3) · (0.2)

(3). (1.2) · 5

(4). (0.9) · (1.1)

(5). (1.5) · 2

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Multiply a Whole Number by a Decimal.

  • Start by checking the box in Step 1
  • Read the statement and check the Show Me box​
  • Continue to check the boxes through Step 3​
  • Read through the final statement in green.
  • Use the slider to increase the number of decimal places.

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Solve the following problems and choose the correct answer.

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