When we round a number to the tens place we look to our ones place to tell us if we round up or down. If the number in our ones place is  or greater, we round up. If the number in the ones place is  or less, we round down. When we round up, the number in the tens place increases by . The numbers to the right of the tens place become  and the numbers to the left of the tens place stay the same. When we round down, the number in the tens place stays the same. The numbers to the right of the tens place become  and the numbers to the left of the tens place stay the same.

In this case,  is greater than  so our rounded number is 

When we round a number to the tens place we look to our ones place to tell us if we round up or down. If the number in our ones place is  or greater, we round up. If the number in the ones place is  or less, we round down. When we round up, the number in the tens place increases by . The numbers to the right of the tens place become  and the numbers to the left of the tens place stay the same. When we round down, the number in the tens place stays the same. The numbers to the right of the tens place become  and the numbers to the left of the tens place stay the same.

In this case,  is equal to  so our rounded number is 

When we round a number to the tens place we look to our ones place to tell us if we round up or down. If the number in our ones place is  or greater, we round up. If the number in the ones place is  or less, we round down. When we round up, the number in the tens place increases by . The numbers to the right of the tens place become  and the numbers to the left of the tens place stay the same. When we round down, the number in the tens place stays the same. The numbers to the right of the tens place become  and the numbers to the left of the tens place stay the same.

In this case,  is less than  so our rounded number is 

When we round a number to the tens place we look to our ones place to tell us if we round up or down. If the number in our ones place is  or greater, we round up. If the number in the ones place is  or less, we round down. When we round up, the number in the tens place increases by . The numbers to the right of the tens place become  and the numbers to the left of the tens place stay the same. When we round down, the number in the tens place stays the same. The numbers to the right of the tens place become  and the numbers to the left of the tens place stay the same.

In this case,  is less than  so our rounded number is 

When we round a number to the tens place we look to our ones place to tell us if we round up or down. If the number in our ones place is  or greater, we round up. If the number in the ones place is  or less, we round down. When we round up, the number in the tens place increases by . The numbers to the right of the tens place become  and the numbers to the left of the tens place stay the same. When we round down, the number in the tens place stays the same. The numbers to the right of the tens place become  and the numbers to the left of the tens place stay the same.

In this case,  is less than  so our rounded number is 

In number form, two hundred fifty-three and eighty-six hundredths is . The "and" signifies the decimal, and "hundredths" signifies the place value of the last decimal number. 

In number form, seven hundred forty-two and sixty-six hundredths is . The "and" signifies the decimal, and "hundredths" signifies the place value of the last decimal number. 

In number form, three hundred twenty-four and thirty-seven hundredths is . The "and" signifies the decimal, and "hundredths" signifies the place value of the last decimal number. 

In number form, four hundred seventy-two and thirty-four hundredths is . The "and" signifies the decimal, and "hundredths" signifies the place value of the last decimal number. 

In number form, five hundred fifty-one and forty-two hundredths is . The "and" signifies the decimal, and "hundredths" signifies the place value of the last decimal number.