Comparing decimal numbers is done using the system: Digit-by-digit analysis
Comparing decimal numbers is done using the system: Digit-by-digit analysis
Analyze the whole numbers: the decimal number with the larger whole number will be the greater of the two.
Analyze the digits that come after the decimal point (only in the case where the whole numbers are equal)
We will move from digit to digit (starting with the tenths, then the hundredths, and so on)
If they continue to be equal, we will proceed with the comparison of the following digits.
If they are different, we will be able to determine which number is larger.
Which decimal number is greater?
Are they the same numbers?
\( 0.23\stackrel{?}{=}0.32 \)
Are they the same numbers?
\( 0.1\stackrel{?}{=}0.10 \)
Are they the same numbers?
\( 0.25\stackrel{?}{=}0.250 \)
Are they the same numbers?
\( 0.22\stackrel{?}{=}0.2 \)
Which decimal number is greater?
Let's convert the decimal numbers into simple fractions and compare them:
0.24 is divided by 100 because there are two digits after the decimal point, therefore:
0.25 is divided by 100 because there are two digits after the decimal point, therefore:
Let's now compare the numbers in the numerator:
\frac{25}{100}>\frac{24}{100}
Therefore, the larger number is 0.25.
Are they the same numbers?
Let's observe the numbers after the decimal point.
Due to the fact that 23 and 32 are not identical, the numbers cannot be considered as the same number.
No
Are they the same numbers?
We will add 0 to the number 0.1 in the following way:
And we will discover that the numbers are indeed identical
Yes
Are they the same numbers?
We will add 0 to the number 0.25 in the following way:
And we will discover that the numbers are identical
Yes
Are they the same numbers?
We will add 0 to the number 0.2 in the following way:
And we will discover that the numbers are not identical
No
Are they the same numbers?
\( 0.5\stackrel{?}{=}0.50 \)
Are they the same numbers?
\( 0.05\stackrel{?}{=}0.5 \)
Are they the same numbers?
\( 0.6\stackrel{?}{=}0.60 \)
Are they the same numbers?
\( 0.8\stackrel{?}{=}0.88 \)
\( 0.45\stackrel{?}{=}0.445 \)
Are the numbers above the same?
Are they the same numbers?
We will add 0 to the number 0.5 in the following way:
And we will discover that the numbers are identical
Yes
Are they the same numbers?
We will add 0 to the number 0.5 in the following way:
And we will discover that the numbers are not identical
No
Are they the same numbers?
We will add 0 to the number 0.6 in the following way:
And we will discover that the numbers are identical
Yes
Are they the same numbers?
We will add 0 to the number 0.8 in the following way:
And we will discover that the numbers are not identical
No
Are the numbers above the same?
Just as the number 45 is not equal to 445, nor is the number 0.45 equal to 0.445—even though their values are relatively close.
This can be seen more clearly in the form of a regular fraction:
45/100 is not equal to 445/1000
No
Are they the same numbers?
\( 0.02\stackrel{?}{=}0.002 \)
Choose the appropriate sign:
\( \frac{1}{3}?0.3 \)
Choose the appropriate sign:
\( \frac{3}{5}~[?]~0.5 \)
Choose the appropriate sign:
\( \frac{4}{8}?0.5 \)
Choose the appropriate sign:
\( \frac{5}{8}?0.6 \)
Are they the same numbers?
We will add 0 to the number 0.02 in the following way:
And we will discover that the numbers are not identical
No
Choose the appropriate sign:
First, let's convert 0.3 to a simple fraction.
Since there is only one number after the decimal point, the number divides by 10 as follows:
Now we have two simple fractions with different denominators.
To compare them, note that the smallest common denominator between them is 30.
We'll multiply each one to reach the common denominator as follows:
Now we can compare the two fractions and see that:
\frac{10}{30}>\frac{9}{30}
>
Choose the appropriate sign:
First, let's convert 0.5 into a simple fraction.
Since there is only one digit after the decimal point, the number is divided by 10, therefore:
Now we have two simple fractions with different denominators.
Let's find the least common denominator between them, in this case the common denominator is 10.
We'll equate the denominators by multiplying by the appropriate numbers:
Now let's compare the numerators and we'll find that:
\frac{6}{10}>\frac{5}{10}
>
Choose the appropriate sign:
First, let's convert 0.5 to a simple fraction.
Since there is only one digit after the decimal point, the number is divided by 10 as follows:
Now we have two simple fractions with different denominators.
To compare them, note that the smallest common denominator between them is 2.
We'll divide each one to reach the common denominator as follows:
Now we can compare the two fractions and see that:
Choose the appropriate sign:
First, let's convert 0.6 into a simple fraction.
Since there is only one digit after the decimal point, the number is divided by 10, therefore:
Now we have two simple fractions with different denominators.
Let's find the least common denominator between them, in this case the common denominator is 80.
We'll equate the denominators by multiplying by the appropriate numbers:
Now let's compare the numerators and we'll find that:
\frac{50}{80} > \frac{48}{80}
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