a total of 7,803,100 tourist visited country a from the year 2018 to 2020. Round to the nearest place value, then express this number in the form of a single digit times an integer to the power of 10
To round 7,803,100 to the nearest place value, we look at the digit in the hundred thousands place, which is 3 in this case. Since 3 is less than 5, we round down and keep the digits in the hundred thousands place and everything to the right as zero. This gives us 7,800,000.
Now, we express this number in the form of a single digit times an integer to the power of 10. In scientific notation, the single digit is obtained by taking the first non-zero digit of the rounded number, in this case 7. The integer is obtained by removing the decimal point and counting the number of zeros to the right of the single digit, in this case 6 since we rounded down to the nearest million.
Therefore, 7,800,000 in scientific notation is 7.8 × 10^6.
To round the number of tourists to the nearest place value, we need to identify the place value we are rounding to. In this case, we are rounding to the nearest million.
The original number of tourists visited country A from 2018 to 2020 is 7,803,100.
Rounding this number to the nearest million gives us 8 million.
To express this number in the form of a single digit times an integer to the power of 10, we can write it as:
8 * 10^6
Therefore, a total of 7,803,100 tourists visited country A from the year 2018 to 2020 can be expressed as 8 * 10^6.
To round the number 7,803,100 to the nearest place value, we need to determine which place value we are rounding to. Since you mentioned expressing it as a single digit times an integer to the power of 10, let's round to the nearest hundred thousand (which is the 6th place from the right).
If the digit in the hundred thousand place is less than 5, we simply drop all the digits after that place and keep the digit in the hundred thousand place the same. However, if the digit in the hundred thousand place is 5 or greater, we round up by adding 1 to the digit in the hundred thousand place and dropping all the digits after it.
Looking at the number 7,803,100, the digit in the hundred thousand place is 8. Since it is greater than 5, we will round up by adding 1 to it. Thus, the rounded value to the nearest hundred thousand is 7,900,000.
Now, let's express this number in the form of a single digit times an integer to the power of 10. We can write 7,900,000 as 7.9 × 10^6.
Therefore, the rounded value of 7,803,100 to the nearest place value and expressed in the form of a single digit times an integer to the power of 10 is 7.9 × 10^6.