what is the rule for multiplying by 100

by Judy Toy Published 3 years ago Updated 2 years ago

Rules for Multiplying by 10 100 and 1000

When we are trying to multiply a whole number with 10, we have to add a zero to the right of the number.
When we are trying to multiply a whole number by 100, we have to put two zeros to the right of the number.
To multiply any whole number with thousand we have to put three zeros to the right of the number.

To multiply any number by 100, just tag TWO zeros on the end. To multiply any number by 1,000, just tag THREE zeros on the end. Note especially what happens when the number you multiply already ends in a zero or zeros. The rule works the same; you still have to tag the zero or zeros.

Full Answer

What is the rule for multiplying by 10 100 1000?

Rules for the multiplication by 10, 100 and 1000. If we multiply a whole number by a 10, then we write one zero at the end. If we multiply a whole number by a 100, then we write two zeros at the end. If we multiply a whole number by a 1000, then we write three zeros at the end.

Is multiplying by 100 the same as multiplying by 100?

0:244:31How to multiply by 100% - YouTubeYouTubeStart of suggested clipEnd of suggested clipOkay multiply by 100 percent you're going to need to remember that when you see the expression 100MoreOkay multiply by 100 percent you're going to need to remember that when you see the expression 100 percent that it is actually a product that equals 1 ok.

Why do we multiply by 100?

And that would be the percentage. Also, you can think %=1/100. So, in order to obtain percentage you have to multiply by 100.

Why do you need to multiply by 100?

So we multiply by 100 to see how much we get for one group of 100. Because "percent" means 1100. 50/200 is not representing 50 out of 100 because 50/200 is not 50%.

What happens when you multiply by 100?

When we multiply a number by 100 we move each digit in that number two place value columns to the left. Multiplying a whole number by 100 is the same as adding two zeros to the end of the number.

How do you multiply a fraction by 100?

0:201:16Math Calculations & Conversions : Changing Fractions to PercentagesYouTubeStart of suggested clipEnd of suggested clipNow if I multiply a fraction by a hundred I multiply at the top by a hundred. So that's 3 times 100MoreNow if I multiply a fraction by a hundred I multiply at the top by a hundred. So that's 3 times 100 is 300 divided by 4 and with a little bit of quick mathematics.

How do you multiply decimals by 100?

To multiply by 100, you move the digits two places to the left. What is 3.12 × 100? To multiply by 100, you move the digits two places to the left. So 3.12 × 100 = 312.

How do you multiply percentages by 100?

0:181:17Percentages Over 100% - YouTubeYouTubeStart of suggested clipEnd of suggested clipI need to come up with a equivalent fraction that has 100 in the denominator. How do I go from fourMoreI need to come up with a equivalent fraction that has 100 in the denominator. How do I go from four to 100. I have to multiply by 25. And I'm going to get a numerator of 225.

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