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How is multiplying two decimals similar from multiplying one decimal by a whole number?
Wiki User
∙ 8y ago
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 3.271
263 * 3271 = 860273.
There are 2 digits after the decimal point in the first multiplicand and 3 in the second. 2 + 3 = 5
So the decimal point in the answer is placed so that there are 5 digit after it: 8.60273
Wiki User
∙ 6y ago
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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.
How is multiplying by a decimal by 100 similar to multiplying a whole number by 100 How is it different?
10000
Why does the answer get smaller when multiplying decimals less than 1?
When multiplying decimals less than 1, the answer gets smaller because each decimal is less than 1. Multiplying a number by a value less than 1 will always result in a smaller product. Think of it as taking a fraction or a portion of the number, which will inevitably make the product smaller.
What is similar about when you multiply decimals and divide decimals by a power of ten?
Both multiplication and division can be performed simply by moving the decimal point of the number: to the right if multiplying, to the left if dividing. E.g. for 10, you can move the decimal point by one place to perform the operation. Multiplication by 10: move decimal one place to the right (add zero if already a whole number). Division by 10: move decimal point one place to the left (one place in if a whole number).
Where do you place the decimal in the answer when multiplying decimals?
If two decimal number have X and Y decimal places, respectively, then the raw product (before removing any trailing zeros) of the two numbers will have (X + Y) decimal places.
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.
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
When multiplying a decimal by a decimal multiply as with what numbers?
The answer depends on the decimal numbers: there is no simple answer if one (or both) of the decimals is a non-terminating number.
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!
How is multiplying by a decimal by 100 similar to multiplying a whole number by 100 How is it different?
10000
How is multiplying decimals different from multiplying whole numbers?
The difference is that if you multiply with a whole number and then multiply with a decimal and you compare.You will notice the whole number is greater.You are very welcome.
Why does the answer get smaller when multiplying decimals less than 1?
When multiplying decimals less than 1, the answer gets smaller because each decimal is less than 1. Multiplying a number by a value less than 1 will always result in a smaller product. Think of it as taking a fraction or a portion of the number, which will inevitably make the product smaller.
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.
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.
What is similar about when you multiply decimals and divide decimals by a power of ten?
Both multiplication and division can be performed simply by moving the decimal point of the number: to the right if multiplying, to the left if dividing. E.g. for 10, you can move the decimal point by one place to perform the operation. Multiplication by 10: move decimal one place to the right (add zero if already a whole number). Division by 10: move decimal point one place to the left (one place in if a whole number).
Where do you place the decimal in the answer when multiplying decimals?
If two decimal number have X and Y decimal places, respectively, then the raw product (before removing any trailing zeros) of the two numbers will have (X + Y) decimal places.
I need help with decimals 2.1 x 5.01?
A simple trick with multiplying decimal numbers is to remove the decimals, multiply the two numbers, then add the decimals back in. The number of decimals you add back in is the total number of decimal places. For example, the stated problem has 1 decimal places in 2.1 and 2 decimal places in 5.01. So first we do the following: 21x501=10521 Now we add 1+2=3 decimal places into the result above: 10.521 That's the answer.
