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Because the number of digits after the decimal place in a product does not require that.

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โˆ™ 2018-03-30 12:16:41
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Q: Why is it not necessary to line up the decimal point when multiplying two numbers?
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Related questions

Why does multiplying numbers by ten move the decimal point to the right?

why does multiplying numbers by ten move the decimal point to the right


How is multiplying a decimal by a whole number the same as multiplying 2 whole numbers?

It is not. When multiplying two whole numbers you need not be concerned about placing the decimal point in the answer.


Do you move the decimal point to the left when multiplying numbers?

You don't move the decimal point at all. You just multiply the numbers and the point should sort itself out or be put of how many digits it is to be.


How do you multiply a whole number by a decimal in the hundreths?

When multiplying a whole number by a decimal with two places, ignore the decimal point and multiply as if you were multiplying two whole numbers. After you get the answer, re-insert the decimal point so that the product has two decimal places.


How do you know where to put the decimal when multiplying decimals?

If two decimal numbers have x and y digits after the decimal point respectively, then their product has (x + y) digits after the decimal point.


Explain how to multiply a whole number by a decimal in the hundredths?

When multiplying a whole number by a decimal with two places, ignore the decimal point and multiply as if you were multiplying two whole numbers. After you get the answer, re-insert the decimal point so that the product has two decimal places.


What is the difference between multiplying decimals and multiplying whole numbers?

You do the multiplication in exactly the same way. The only extra thing is that when multiplying decimals, you need to place the decimal point (or decimal comma - depending on your country) in the correct position. If one number has, for example, 3 digits after the decimal point, and the other 4, you need to place the decimal point in the result (BEFORE eliminating unnecessary zeros) in such a way that there are, in this example, 7 digits (3 + 4) to the right of the decimal point.


What are methods that can be used to determine where to put the decimal point when multiplying?

move the decimal down and over however many numbers are behind the decimal


What is the last step for multiplying decimal numbers?

To multiply decimal numbers, the decimal point is ignored and the multiplication is done as though they were (large) integers. The last step is to put the decimal point into the answer by ensuring the same number of digits follow it as were following the decimal points in the numbers multiplied together; trailing zeros can be removed at this point.


Why does multiplying numbers by 10 move the decimal point to the right but multiplying by .10 move the decimal point to the let?

1


How do you multiply a decimal with whole and part of a whole number?

Example of multiplying whole decimal numbers: 2.37 × 3.56 = 8.4372 Remove the decimal point and multiply as for whole numbers: 237 × 356 = 84372 Then add the decimal point, thus : 8.4372


What does multiplying a decimal number by 100 do to the decimal point?

It moves the decimal point two places to the right.


How do you align decimals when multiplying?

You do not need to align decimal points when multipylng. You multiply the two numbers ignoring the decimal point but ensuring that any trailins 0s are present. The number of digits after the decimal point in the answer is the sum of the number of digits after the decimal points in the two multiplicands.


Which way do you move the decimal point when multiplying?

left


When you are multiplying a decimal with 10 does the decimal point move left or right?

right


How is multiplying two decimals like multiplying a whole number and a decimal?

There is almost no difference. The only difference is placing the decimal point.


Are natural numbers are decimal numbers?

Almost all numbers that we use in daily life are decimal numbers. The place value of each digit is ten times the place value of the digit to its right. And that is all that is required of decimal numbers. A decimal point is not necessary.


Why can you move the decimal point in the divisor to the right?

Moving a decimal point to the right is the same as multiplying a number by a power of ten. As long as both numbers are multiplied by the same amount, they will retain their same relationship.


How is multiplying two decimals similar from multiplying one decimal by a whole number?

You simply multiply the two numbers together ignoring the decimal point. You then count the number of decimal places in each of the multiplicands and add them together. In the product, you put the decimal point so that there as many digits after the decimal point as that sum.For example, to multiply 2.63 by 3.271263 * 3271 = 860273.There are 2 digits after the decimal point in the first multiplicand and 3 in the second. 2 + 3 = 5So the decimal point in the answer is placed so that there are 5 digit after it: 8.60273


Are the numbers on the right side of the decimal point the decimal numbers?

yes. any thing you have on the right side of the decimal point(.) is a decimal:)


Is 15 divisible by 7?

Try dividing it with a calculator. If you get numbers after the decimal point, it is NOT divisible.Try dividing it with a calculator. If you get numbers after the decimal point, it is NOT divisible.Try dividing it with a calculator. If you get numbers after the decimal point, it is NOT divisible.Try dividing it with a calculator. If you get numbers after the decimal point, it is NOT divisible.


How to multiply decimals?

You multiply decimals like you would a normal equation, just ignore the decimal point. So say the question is 8.25 times 3.73 you would take the decimal points out, so it would be 825 times 373, and then figure out the answer by multiplying the two numbers together. The answer in this case is 307725. Then you place the decimal point back in by counting the numbers after the decimal point. So in this case there are 4 numbers after the decimal point. then just place then decimal point 4 numbers in so your answer would be 30.7725. Or you could just use a calculator.


Why does multiply numbers by 10move the decimal point to the right but multiplying by zero point Tian move the decimal point to the left?

It is because 0.10 = 1/10 and so multiplication by 0.10 is the same as division by 10, the opposite of multiplication by 10.


What is it called when you move a decimal point to the right?

When you move a decimal point to the right you are multiplying a number by 10. For example, take 3.4. If you move the decimal point to the right you get 34. This is the same as: 3.4x10 = 34. Reversing this, you are dividing by 10 by moving the decimal point to the left. For example, take 73. If you move the decimal point to the right you get 7.3. This is the same as: 73/10 = 7.3. If you move a decimal point 2 spaces to the right, you are multiplying by 100, or more generally if you move the decimal point n spaces to the right, you are multiplying by 10^n.


Why was the decimal point invented?

to do point numbers.