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How is multiplying and dividing decimals similar to multiplying and dividing whole number?
Multiplying decimals:
Example: 2.5 x 1.3 = 3.25
Start by removing the decimal points, thus: 25 x 13 = (the answer is 325)
Both 2.5 and 1.3 have 1 decimal places, so 1 + 1 = 2 (decimal places)
Counting 2 places, right to left, places the decimal point here: 3.25
Search Google for division of decimals - there are plenty of how to examples and help on the internet!
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Is taking ½ of a number is the same as dividing by ½?
No, taking ½ of a number is the same as dividing it by 2. Dividing a number by ½ is the same as multiplying it by 2.
How do you check your answers with decimals?
You multiplie the number you were dividing by with the answer.
Is multiplying a number by 2 is the same as halving that number?
no, dividing a number is halving it, multiplying iy by 2 is doubling it
How is multiplying two decimals different from multiplying one decimal by a whole number?
they aren't that different but the whole number needs to be converted for them to be the same
Why is dividing by a number the same as multiplying by its reciprocal?
That is the definition of reciprocal.
