Sure! Here’s a lesson on rounding decimal and whole numbers:

1. Rounding Whole Numbers:
   • Rounding whole numbers involves changing a number to the nearest ten, hundred, thousand, etc.
   • To round a whole number, look at the digit to the right of the place value you want to round to.
   • If the digit is 5 or greater, round up (increase the digit in the place value you want to round to by 1).
   • If the digit is less than 5, round down (keep the digit in the place value you want to round to the same).
   • For example, let’s round the number 345 to the nearest ten:
     • The digit in the tens place is 4, and the digit to the right of it is 5.
     • Since 5 is greater than 4, we round up.
     • The number 345 rounded to the nearest ten is 350.
2. Rounding Decimal Numbers:
   • Rounding decimal numbers involves changing a number to the nearest whole number, tenth, hundredth, etc.
   • To round a decimal number, look at the digit to the right of the place value you want to round to.
   • If the digit is 5 or greater, round up (increase the digit in the place value you want to round to by 1).
   • If the digit is less than 5, round down (keep the digit in the place value you want to round to the same).
   • For example, let’s round the decimal number 3.456 to the nearest hundredth:
     • The digit in the hundredths place is 5, and the digit to the right of it is 6.
     • Since 6 is greater than 5, we round up.
     • The number 3.456 rounded to the nearest hundredth is 3.46.
3. Rounding to a Specific Decimal Place:
   • Sometimes, you may need to round a decimal number to a specific decimal place, such as rounding to the nearest tenth or thousandth.
   • To round to a specific decimal place, identify the digit in that place value and follow the rounding rules mentioned earlier.
   • For example, let’s round the decimal number 7.89321 to the nearest tenth:
     • The digit in the tenths place is 8, and the digit to the right of it is 9.
     • Since 9 is greater than 5, we round up.
     • The number 7.89321 rounded to the nearest tenth is 7.9.

Remember to always check the rounding rules and the digit to the right of the place value you want to round to when rounding decimal and whole numbers.