1. **State the problem:** Divide each given number by 22. 2. **Formula used:** Division is finding how many times the divisor fits into the dividend. The quotient $q$ and remainder $r$ satisfy $$\text{dividend} = (\text{divisor} \times q) + r$$ where $0 \leq r < \text{divisor}$. 3. **Divide each:** (1) $52 \div 22$: - $22 \times 2 = 44$ (fits twice) - Remainder $52 - 44 = 8$ - Answer: $2$ R $8$ (2) $66 \div 22$: - $22 \times 3 = 66$ - Remainder $0$ - Answer: $3$ (3) $70 \div 22$: - $22 \times 3 = 66$ - Remainder $70 - 66 = 4$ - Answer: $3$ R $4$ (4) $80 \div 22$: - $22 \times 3 = 66$ - Remainder $80 - 66 = 14$ - Answer: $3$ R $14$ (5) $85 \div 22$: - $22 \times 3 = 66$ - Remainder $85 - 66 = 19$ - Answer: $3$ R $19$ (6) $88 \div 22$: - $22 \times 4 = 88$ - Remainder $0$ - Answer: $4$ (7) $90 \div 22$: - $22 \times 4 = 88$ - Remainder $90 - 88 = 2$ - Answer: $4$ R $2$ (8) $100 \div 22$: - $22 \times 4 = 88$ - Remainder $100 - 88 = 12$ - Answer: $4$ R $12$