2,380
130
To round 1236 to the nearest 100, you need to look at the tens and ones digits. In this case, the tens digit is 3 and the ones digit is 6. Since the tens digit is less than 5, you round down. Therefore, 1236 rounded to the nearest 100 is 1200.
2400
To round 73.4 to the nearest tens place, we look at the digit in the ones place, which is 3. Since 3 is less than 5, we keep the tens place digit the same and change all digits to the right to zero. Therefore, 73.4 rounded to the nearest tens place is 70.
660
660
'94' rounded to the nearest tens is '90'.
135
130
Yes.
The ten 1n 2381 is the '8' representing eighty. To round to the nearest ten you need to look at the units; if they are between 0 and 4 the ten stays the same, if they're between 5 and 9 the tens go up to the next number. 74 rounded to the nearest ten would be 70, because the units are between 0 and 4. 76 rounded to the nearest ten would be 80, because 6 is between 5 and 9. 2381 rounds to 2380, because the 1 is between 0 and 4.
1640
94
60
To round 198.59 to the nearest tens place, you look at the digit in the ones place, which is 8. Since 8 is 5 or greater, you round up the tens digit (9) by 1, making it 10. Therefore, 198.59 rounded to the nearest tens place is 200.
20
Look at the digit in ones place. If it is five or greater, round the digit in tens place to the next higher digit. If the digit in ones place is less than five, leave the digit in tens place as it is. 512162 rounded to the nearest tens is 512160.