To round 3400 to the nearest 100, you look at the hundreds place, which is the second digit from the right. In this case, the hundreds place is 4. Since 4 is less than 5, you keep the hundreds digit the same and change all digits to the right to zero, resulting in 3400.
3400 is already at the nearest 100. Rounding to the nearest hundred means that the last two digits (tens and units digits) are replaced by 00 if they are between 1 and 49 (for example 5419 would be rounded to 5400), and if the last two digits are between 50 and 99, then the hundreds digit is increased by 1 followed by 00 (so 2456 would be rounded to 2500).
The number 3400 is already rounded to the nearest 10.
300
3400
To round 97 to the nearest 100, you need to look at the digit in the tens place, which is 9 in this case. Since 9 is greater than or equal to 5, you will round up. Therefore, 97 rounded to the nearest 100 is 100.
200
The number 3400 is already rounded to the nearest 10.
3400.
3400
3400
3400
3000
3426 rounded to the nearest thousand is 3000 because 400 is less than 500
3400
372 rounded to the nearest hundred is 400
300
3400
100