Divide these numbers. Make a clue board to help you.

1, using the clue board method.

1. $669 \div 3$

• Clue Board for 3: $10 \times 3 = 30$ $100 \times 3 = 300$ $200 \times 3 = 600$ $20 \times 3 = 60$ $3 \times 3 = 9$

• Steps:

  1. $669 - (200 \times 3) = 669 - 600 = 69$
  2. $69 - (20 \times 3) = 69 - 60 = 9$
  3. $9 - (3 \times 3) = 9 - 9 = 0$
  4. Total quotient: $200 + 20 + 3 = 223$. Remainder: 0.

• Answer: $\boxed{\text{223}}$

2. $484 \div 4$

• Clue Board for 4: $10 \times 4 = 40$ $100 \times 4 = 400$ $20 \times 4 = 80$ $1 \times 4 = 4$

• Steps:

  1. $484 - (100 \times 4) = 484 - 400 = 84$
  2. $84 - (20 \times 4) = 84 - 80 = 4$
  3. $4 - (1 \times 4) = 4 - 4 = 0$
  4. Total quotient: $100 + 20 + 1 = 121$. Remainder: 0.

• Answer: $\boxed{\text{121}}$

3. $255 \div 5$

• Clue Board for 5: $10 \times 5 = 50$ $50 \times 5 = 250$ $1 \times 5 = 5$

• Steps:

  1. $255 - (50 \times 5) = 255 - 250 = 5$
  2. $5 - (1 \times 5) = 5 - 5 = 0$
  3. Total quotient: $50 + 1 = 51$. Remainder: 0.

• Answer: $\boxed{\text{51}}$

4. $427 \div 6$

• Clue Board for 6: $10 \times 6 = 60$ $70 \times 6 = 420$ $1 \times 6 = 6$

• Steps:

  1. $427 - (70 \times 6) = 427 - 420 = 7$
  2. $7 - (1 \times 6) = 7 - 6 = 1$
  3. Total quotient: $70 + 1 = 71$. Remainder: 1.

• Answer: $\boxed{\text{71 remainder 1}}$

5. $165 \div 7$

• Clue Board for 7: $10 \times 7 = 70$ $20 \times 7 = 140$ $3 \times 7 = 21$

• Steps:

  1. $165 - (20 \times 7) = 165 - 140 = 25$
  2. $25 - (3 \times 7) = 25 - 21 = 4$
  3. Total quotient: $20 + 3 = 23$. Remainder: 4.

• Answer: $\boxed{\text{23 remainder 4}}$

6. $765 \div 9$

• Clue Board for 9: $10 \times 9 = 90$ $80 \times 9 = 720$ $5 \times 9 = 45$

• Steps:

  1. $765 - (80 \times 9) = 765 - 720 = 45$
  2. $45 - (5 \times 9) = 45 - 45 = 0$
  3. Total quotient: $80 + 5 = 85$. Remainder: 0.

• Answer: $\boxed{\text{85}}$

7. $984 \div 8$

• Clue Board for 8: $10 \times 8 = 80$ $100 \times 8 = 800$ $20 \times 8 = 160$ $3 \times 8 = 24$

• Steps:

  1. $984 - (100 \times 8) = 984 - 800 = 184$
  2. $184 - (20 \times 8) = 184 - 160 = 24$
  3. $24 - (3 \times 8) = 24 - 24 = 0$
  4. Total quotient: $100 + 20 + 3 = 123$. Remainder: 0.

• Answer: $\boxed{\text{123}}$

8. $821 \div 7$

• Clue Board for 7: $10 \times 7 = 70$ $100 \times 7 = 700$ $7 \times 7 = 49$

• Steps:

  1. $821 - (100 \times 7) = 821 - 700 = 121$
  2. $121 - (10 \times 7) = 121 - 70 = 51$
  3. $51 - (7 \times 7) = 51 - 49 = 2$
  4. Total quotient: $100 + 10 + 7 = 117$. Remainder: 2.

• Answer: $\boxed{\text{117 remainder 2}}$