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Earn +20 ptsQ: When adding or subtracting decimal how can you be sure to add or subtract only digits that have the same place value?
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When adding or subtracting decimals how can you be sure to add or subtract only digits that have the same place value?
The simplest way is to line up the numbers so that their decimal points are aligned, and corresponding digits are also aligned according to their place value.
Why is it important to line up the decimal points when adding or subtracting but not when multiplying?
Because when adding or subtracting, the operations must take account of the place values of individual digits in the numbers. When multiplying, only the overall order of magnitudes are relevant for placing the decimal point in the product.
How do you turn a division into a decimal fraction?
You do a long division, adding decimal digits until you get a remainder of zero (terminating decimal) or a repeating pattern of decimal digits.
How do you estimate using front-end estimation?
by adding or subtracting the values of the digits in the front place
How can you round to the hundredths place if there are 2 digits in the decimal?
The only way to do this is by adding a zero after the 2 digit in the decimal.
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