Decimal Multiplication: Place the Decimal Point in 0.3 × 2.15 = 0645

Look at the following exercise and work out the correct place of the decimal point in the answer:

0.3×2.15=0645 0.3\times2.15=0645

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Step-by-step video solution

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00:00 Place the decimal point
00:06 In the first factor there is one digit after the decimal point
00:11 And in the second factor there are 2 digits after the decimal point
00:16 Therefore we'll count 3 digits and then place the decimal point
00:21 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

Look at the following exercise and work out the correct place of the decimal point in the answer:

0.3×2.15=0645 0.3\times2.15=0645

2

Step-by-step solution

In the number -0.3, there is one digit after the decimal point: 3.

In the number 2.15, there are two digits after the decimal point: 15.

Therefore, we have three digits after the decimal point.

To find the answer, we will count three decimal places to the left, which gives us -0.645.

3

Final Answer

0.645 0.645

Practice Quiz

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\( 0.1 \times 0.008 = \)

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