The math skill being taught is subtraction with decimal numbers. It involves lining up the decimal points, adding zeroes to match the number of decimal places, and then subtracting as with whole numbers.
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Subtraction with decimal numbers
Test your understanding of subtraction with decimal numbers by practicing it! Work through the below exercises to use it in practice.
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Let's subtract 0.006 from 0.25.
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Rewrite the subtraction in columns, with the decimal places lined up
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And add zeroes to the end of the shorter number.
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Now we can subtract like normal, for a difference of 0.244