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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.
How can i use decimal models to add decimals?
You can use decimal models to add decimals by using the hundedths blocks as used in base-ten blocks and add the following decimals you need to and use the hundredths block to shade in the total.
How do you change percentages to decimals and decimals into percentages?
5.34 x 100 = 534 To change a decimal into a percentage: times by 100, or move the decimal point two places to the right. 534 / 100 = 5.35 To change a percentage into a decimal: divide by 100, or move the decimal point two places to the left).
Is a repeating decimal rational?
yes, repeating decimals (those that have infinite - never ending - number of digits after the decimal point and these decimals show repeating pattern) are rational numbers, because they can be written as fractions.
How many zeros are in a trillion with decimals?
There are 12 0s in a trillion - before the decimal point. Since a trillion is a whole number, there is no need for 0s after the decimal point. If you do have 0s after the decimal point, there can by any number that you like and so the question cannot be answered.
