Show me the simplest method to the third graders for dividing a three digit number by one digit number?

One simple method for third graders to divide a three-digit number by a one-digit number is to use long division. Here is a step-by-step guide:

1. Write the three-digit number inside the division bracket, with the one-digit number outside the bracket.
2. Start by dividing the leftmost digit of the three-digit number by the one-digit number. Write the quotient above the division bracket.
3. Multiply the quotient by the one-digit number and write the product below the three-digit number.
4. Subtract the product from the three-digit number to find the remainder.
5. Bring down the next digit of the three-digit number next to the remainder.
6. Repeat steps 2-4 until all digits of the three-digit number have been divided.

For example, let's divide 456 by 3:

1 5 2
_________
3 | 4 5 6
-3
-----
1 5
- 1 5
-----
6

So, 456 divided by 3 equals 152 with a remainder of 0.

Step 1: Understand Place Value

- Explain that each digit in a number represents a different place value:
- Hundreds (leftmost digit)
- Tens (middle digit)
- Ones (rightmost digit)

Step 2: Place the Dividend and Divisor

- Write the three-digit dividend (the number you want to divide) on top of the division line.
- Write the one-digit divisor (the number you want to divide by) below the division line.

Step 3: Divide the Hundreds

- Divide the hundreds digit of the dividend by the divisor.
- Write the quotient (the answer) above the dividend.
- Multiply the divisor by the quotient and write the product below the dividend.

Step 4: Subtract to Bring Down the Tens

- Subtract the product from the hundreds digit of the dividend.
- Bring down the tens digit of the dividend next to the difference.

Step 5: Repeat Steps 3-4 for the Tens and Ones

- Continue dividing the tens digit by the divisor and subtracting until there are no more digits left.
- Bring down the ones digit next to the tens digit if necessary.

Step 6: Write the Remainder

- If there is any value left after dividing all the digits, write it as the remainder.

Example:

Divide 216 by 3

216 | 3 ) 72 (Quotient = 72)

21 (Multiply 3 by 72)
6

Answer: 72 R 0 (remainder)