2. Round off to the nearest 10 . Example: $$ 789=790 $$ a. 7 $$ \square $$ b. 4 $$ \square $$ c. 78 $$ \square $$ d. 61 $$ \square $$ e. 328 $$ \square $$ f. 451 3. Round off to the nearest 100 . Example: $$ 789 \approx 800 $$ a. 3 $$ \square $$ b. 54 $$ \square $$ C. 28 $$ \square $$ d. 765 $$ \square $$ e. 938 $$ \square $$ f. 1764 $$ \square $$ 4. Round off to the nearest 1000. Example: $$ 789 \approx 1000 $$ a. 176 $$ \square $$ b. 324 $$ \square $$ C. 1924 d. 8639 $$ \square $$ e. 14342 $$ \square $$ 1. 67285 $$ \square $$ $$ \begin{array}{lll}0 & 1 & 2\end{array} $$ 5 $$ 6 \quad 7 $$ 89 $$ \begin{array}{lll}10 & 11 & 12\end{array} $$

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Sure, let's go through each of the rounding problems step by step.

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## 2. Round Off to the Nearest 10

**Example:**  
$$ 789 \approx 790 $$

**a. 7**  
- **Rounding:** Since 7 is a single-digit number, we consider it as 7.  
- **Nearest 10:** 10  
- **Answer:** **10**

**b. 4**  
- **Rounding:** 4 is closer to 0 than to 10.  
- **Nearest 10:** 0  
- **Answer:** **0**

**c. 78**  
- **Rounding:** The units digit is 8 (which is ≥5), so we round up.  
- **Nearest 10:** 80  
- **Answer:** **80**

**d. 61**  
- **Rounding:** The units digit is 1 (which is <5), so we round down.  
- **Nearest 10:** 60  
- **Answer:** **60**

**e. 328**  
- **Rounding:** The units digit is 8 (which is ≥5), so we round up.  
- **Nearest 10:** 330  
- **Answer:** **330**

**f. 451**  
- **Rounding:** The units digit is 1 (which is <5), so we round down.  
- **Nearest 10:** 450  
- **Answer:** **450**

---

## 3. Round Off to the Nearest 100

**Example:**  
$$ 789 \approx 800 $$

**a. 3**  
- **Rounding:** 3 is closer to 0 than to 100.  
- **Nearest 100:** 0  
- **Answer:** **0**

**b. 54**  
- **Rounding:** The tens digit is 5 (which is ≥5 when considering the last two digits 54), so we round up.  
- **Nearest 100:** 100  
- **Answer:** **100**

**c. 28**  
- **Rounding:** 28 is closer to 0 than to 100.  
- **Nearest 100:** 0  
- **Answer:** **0**

**d. 765**  
- **Rounding:** The last two digits are 65 (which is ≥50), so we round up.  
- **Nearest 100:** 800  
- **Answer:** **800**

**e. 938**  
- **Rounding:** The last two digits are 38 (which is <50), so we round down.  
- **Nearest 100:** 900  
- **Answer:** **900**

**f. 1764**  
- **Rounding:** The last two digits are 64 (which is ≥50), so we round up.  
- **Nearest 100:** 1800  
- **Answer:** **1800**

---

## 4. Round Off to the Nearest 1000

**Example:**  
$$ 789 \approx 1000 $$

**a. 176**  
- **Rounding:** 176 is closer to 0 than to 1000.  
- **Nearest 1000:** 0  
- **Answer:** **0**

**b. 324**  
- **Rounding:** 324 is closer to 0 than to 1000.  
- **Nearest 1000:** 0  
- **Answer:** **0**

**c. 1924**  
- **Rounding:** The last three digits are 924 (which is ≥500), so we round up.  
- **Nearest 1000:** 2000  
- **Answer:** **2000**

**d. 8639**  
- **Rounding:** The last three digits are 639 (which is ≥500), so we round up.  
- **Nearest 1000:** 9000  
- **Answer:** **9000**

**e. 14342**  
- **Rounding:** The last three digits are 342 (which is <500), so we round down.  
- **Nearest 1000:** 14000  
- **Answer:** **14000**

**f. 67285**  
- **Rounding:** The last three digits are 285 (which is <500), so we round down.  
- **Nearest 1000:** 67000  
- **Answer:** **67000**

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If you have any more questions or need further clarification, feel free to ask!
**Rounding Off Numbers** 1. **Nearest 10:** - **a. 7** → **10** - **b. 4** → **0** - **c. 78** → **80** - **d. 61** → **60** - **e. 328** → **330** - **f. 451** → **450** 2. **Nearest 100:** - **a. 3** → **0** - **b. 54** → **100** - **c. 28** → **0** - **d. 765** → **800** - **e. 938** → **900** - **f. 1764** → **1800** 3. **Nearest 1000:** - **a. 176** → **0** - **b. 324** → **0** - **c. 1924** → **2000** - **d. 8639** → **9000** - **e. 14342** → **14000** - **f. 67285** → **67000** If you have any more questions or need further help, feel free to ask!

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