74
Let a1 represent the tens digit and ao represent the unit digit. From the problem, we have two equations:
10a1+ao = 8+6(a1+ao)
a1=3+ao
Substitute a1from the second equation into the first equation and solve for a0:
10(3+ao)+ao = 8+6((3+ao)+ao)
30+10ao+ao = 8+18+6ao+6ao
30+11ao = 26+12ao
a0=4
Substituting this back into the second equation, we get:
a1=3+4=7
As the digits are moved left, the digit in the tenths column goes into the units column, the digit in the hundredths column goes into the tenths column, etc; each digit is ten times its previous value, thus moving the digits to the left multiplies the number by 10. Similarly moving the digits to the right: the digit in the units column goes into the tenths column, the digit in the tenths column goes into the hundredths column, etc; each digit is a tenth of its previous value, thus moving the digits to the right divides the number by 10.
The name of such a number is a decimal number. The digits after the decimal point represent tenths, hundredths, thousandths, and so on.
The digit in the tenths place of the number 0.3554 is the digit 3.
The decimal point of a number separates the whole part of the number from the fractional part of the number. It is located between the units column and the tenths column of every number. A decimal place is one of the digits after the decimal point: The first decimal place is the first digit, which is the tenths digit The second decimal place is the second digit, which is the hundredths digit The third decimal place is the third digit, which is the thousandths digit etc. When showing or rounding to a number of decimal places there will be that number of digits after the decimal place. eg the number 5.671 has three decimal places as there are three digits after the decimal point and the second decimal place, for example, contains the digit 7.
The digit in the tenths place in the number 4.9536 is the digit 9.
As the digits are moved left, the digit in the tenths column goes into the units column, the digit in the hundredths column goes into the tenths column, etc; each digit is ten times its previous value, thus moving the digits to the left multiplies the number by 10. Similarly moving the digits to the right: the digit in the units column goes into the tenths column, the digit in the tenths column goes into the hundredths column, etc; each digit is a tenth of its previous value, thus moving the digits to the right divides the number by 10.
44
42.21 or 84.42
84.42 or 42.21
None, the digits are the same.
The name of such a number is a decimal number. The digits after the decimal point represent tenths, hundredths, thousandths, and so on.
The digit in the tenths place of the number 809.47321 is the digit 4.
The digit in the tenths place of the number 0.3554 is the digit 3.
The tenths digit in the number 22.3 is the digit 3.
The decimal point of a number separates the whole part of the number from the fractional part of the number. It is located between the units column and the tenths column of every number. A decimal place is one of the digits after the decimal point: The first decimal place is the first digit, which is the tenths digit The second decimal place is the second digit, which is the hundredths digit The third decimal place is the third digit, which is the thousandths digit etc. When showing or rounding to a number of decimal places there will be that number of digits after the decimal place. eg the number 5.671 has three decimal places as there are three digits after the decimal point and the second decimal place, for example, contains the digit 7.
the 3 digits is the ones place the 5 digits is the tenths place the 9 digits is the hundredths place
The tenths digit is the first one after the decimal place; the tenths digit in 743.25 is the 2.