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Reading decimal numbers

In the decimal numbering system, each digit of the integer or decimal part occupies a position or order with the following names: Hundreds Tens Units Whole parts Tenth Hundredth Thousand Thousand Hundredth Thousand Millionth Decimal Parts As for reading, we read the whole part followed by the decimal part , accompanied by the words: tenths: where there is one decimal place; hundredths: when there are two decimal places; thousandths: when there are three decimal places; tenth thousandths: when there are four decimal places; hundredths thousandths: when there are five decimal places and so on.
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Proportional Greatness Exercises

1) A prize of R $ 600,000 will be split between the bingo hitters. Look at the table and answer: Number of hitters Prize 3 $ 200,000.00 4 $ 150,000 a) What is the ratio between the number of hitters from the $ 200,000.00 prize to the $ 150,000.00 prize? b) What is the ratio between the awards in the table above, considering 3 hit and 4 hit?
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Challenge Response 157

The multiple of 9 A number is divisible by 9 if the sum of its digits is a multiple of 9. Therefore, the number must have 9 digits equal to 1. However, as stated, it must also have some zero digit. So the smallest number is: 1.011 111 111. Back to statement Challenge 156 Completing the sequence Challenge index Next >> Challenge 158 A special symbol
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Ascending function and decreasing function

Given a function f: A B, we say that f is increasing in some set A 'A if and only if, for any x 1 A' and x 2 A ', with x 1 2, we have f (x 1) 2). For example, the function f: IR IR defined by f (x) = x + 1 is increasing in IR because: x 1 2 => x 1 +1 2 +1 => f (x 1) 2) That is: When domain values ​​grow, so do your images.
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The unreasonable effectiveness of mathematics (I)

In 1959, in his "Richard Courant Lecture in Mathematical Sciences" at New York University, Eugene Wigner made this expression famous. He noted that mathematical concepts unexpectedly offer a very accurate description of a phenomenon. Wigner said that since we do not know why mathematics is unexpectedly useful, we are not able to say with certainty whether a theory, which we consider to be true, is uniquely appropriate to the phenomenon or not.
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Multiplication of decimal rational numbers

Consider the following multiplication: 3.49 · 2.5. Transforming into decimal fractions, we have: Practical method: We multiply the two decimal numbers as if they were natural. We put the comma in the result so that the number of decimal places in the product is equal to the sum of the factor's decimal places.
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