XeRCISE 17.2 1. Write down the following numbers: $$ \begin{array}{ll} ext { a) } 8 ext { more than } 99999 & ext { b) } 9 ext { less than } 100005 \ ext { c) } 200 ext { more than } 99998 & ext { d) } 175 ext { less than } 100030 \ ext { e) } 2 ext { more than } 999999 & ext { f) } 5 ext { less than } 1000003 \ ext { g) } 1000 ext { more than } 9999000 & ext { h) } 30 ext { less than } 99999990 \ ext { i) } 300 ext { less than } 10000000 & ext { j) } 2000 ext { less than } 10000000 \ ext { k) } 100000 ext { less than } 10000000 & ext { l) } 800000 ext { less than } 10000000 \ ext { 2. Complete the following sequences: } \ \begin{array}{ll} ext { a) } 19999980 ; 19999985 ; \square ; 19999995 ; \square \ ext { b) } 120000200 ; \square ; 120000600 ; \square ; 120001000 ; \square \ ext { c) } 155200143 ; 155200147 ; \square ; \square ; 155200159 ; \square\end{array}\end{array} $$

Question

XeRCISE 17.2 1. Write down the following numbers: $$ \begin{array}{ll}	ext { a) } 8 	ext { more than } 99999 & 	ext { b) } 9 	ext { less than } 100005 \ 	ext { c) } 200 	ext { more than } 99998 & 	ext { d) } 175 	ext { less than } 100030 \ 	ext { e) } 2 	ext { more than } 999999 & 	ext { f) } 5 	ext { less than } 1000003 \ 	ext { g) } 1000 	ext { more than } 9999000 & 	ext { h) } 30 	ext { less than } 99999990 \ 	ext { i) } 300 	ext { less than } 10000000 & 	ext { j) } 2000 	ext { less than } 10000000 \ 	ext { k) } 100000 	ext { less than } 10000000 & 	ext { l) } 800000 	ext { less than } 10000000 \ 	ext { 2. Complete the following sequences: } \ \begin{array}{ll}	ext { a) } 19999980 ; 19999985 ; \square ; 19999995 ; \square \ 	ext { b) } 120000200 ; \square ; 120000600 ; \square ; 120001000 ; \square \ 	ext { c) } 155200143 ; 155200147 ; \square ; \square ; 155200159 ; \square\end{array}\end{array} $$

UpStudy AI · Accepted Answer

Sure, let's work through each part of **Exercise 17.2** step by step.

---

### **1. Write down the following numbers**

**a) 8 more than 99,999**

$$
99,999 + 8 = 100,007
$$

**Answer:** **100,007**

---

**b) 9 less than 100,005**

$$
100,005 - 9 = 99,996
$$

**Answer:** **99,996**

---

**c) 200 more than 99,998**

$$
99,998 + 200 = 100,198
$$

**Answer:** **100,198**

---

**d) 175 less than 100,030**

$$
100,030 - 175 = 99,855
$$

**Answer:** **99,855**

---

**e) 2 more than 999,999**

$$
999,999 + 2 = 1,000,001
$$

**Answer:** **1,000,001**

---

**f) 5 less than 1,000,003**

$$
1,000,003 - 5 = 999,998
$$

**Answer:** **999,998**

---

**g) 1,000 more than 9,999,000**

$$
9,999,000 + 1,000 = 10,000,000
$$

**Answer:** **10,000,000**

---

**h) 30 less than 99,999,990**

$$
99,999,990 - 30 = 99,999,960
$$

**Answer:** **99,999,960**

---

**i) 300 less than 10,000,000**

$$
10,000,000 - 300 = 9,997,000
$$

**Answer:** **9,997,000**

---

**j) 2,000 less than 10,000,000**

$$
10,000,000 - 2,000 = 9,998,000
$$

**Answer:** **9,998,000**

---

**k) 100,000 less than 10,000,000**

$$
10,000,000 - 100,000 = 9,900,000
$$

**Answer:** **9,900,000**

---

**l) 800,000 less than 10,000,000**

$$
10,000,000 - 800,000 = 9,200,000
$$

**Answer:** **9,200,000**

---

### **2. Complete the following sequences**

**a) 19,999,980 ; 19,999,985 ; □ ; 19,999,995 ; □**

**Pattern:** The sequence increases by **5** each time.

- **First term:** 19,999,980
- **Second term:** 19,999,980 + 5 = 19,999,985
- **Third term (□):** 19,999,985 + 5 = **19,999,990**
- **Fourth term:** 19,999,990 + 5 = 19,999,995
- **Fifth term (□):** 19,999,995 + 5 = **20,000,000**

**Completed Sequence:**
$$
19,999,980 ; 19,999,985 ; \mathbf{19,999,990} ; 19,999,995 ; \mathbf{20,000,000}
$$

---

**b) 120,000,200 ; □ ; 120,000,600 ; □ ; 120,001,000 ; □**

**Pattern:** The sequence increases by **200** each step.

- **First term:** 120,000,200
- **Second term (□):** 120,000,200 + 200 = **120,000,400**
- **Third term:** 120,000,400 + 200 = 120,000,600
- **Fourth term (□):** 120,000,600 + 200 = **120,000,800**
- **Fifth term:** 120,000,800 + 200 = 120,001,000
- **Sixth term (□):** 120,001,000 + 200 = **120,001,200**

**Completed Sequence:**
$$
120,000,200 ; \mathbf{120,000,400} ; 120,000,600 ; \mathbf{120,000,800} ; 120,001,000 ; \mathbf{120,001,200}
$$

---

**c) 155,200,143 ; 155,200,147 ; □ ; □ ; 155,200,159 ; □**

**Pattern:** The sequence increases by **4** each time.

- **First term:** 155,200,143
- **Second term:** 155,200,143 + 4 = 155,200,147
- **Third term (□):** 155,200,147 + 4 = **155,200,151**
- **Fourth term (□):** 155,200,151 + 4 = **155,200,155**
- **Fifth term:** 155,200,155 + 4 = 155,200,159
- **Sixth term (□):** 155,200,159 + 4 = **155,200,163**

**Completed Sequence:**
$$
155,200,143 ; 155,200,147 ; \mathbf{155,200,151} ; \mathbf{155,200,155} ; 155,200,159 ; \mathbf{155,200,163}
$$

---

These solutions follow the arithmetic patterns present in each sequence. If you have any further questions or need additional explanations, feel free to ask!
**1. Numbers:** a) 100,007 b) 99,996 c) 100,198 d) 99,855 e) 1,000,001 f) 999,998 g) 10,000,000 h) 99,999,960 i) 9,997,000 j) 9,998,000 k) 9,900,000 l) 9,200,000 **2. Sequences:** a) 19,999,980 ; 19,999,985 ; **19,999,990** ; 19,999,995 ; **20,000,000** b) 120,000,200 ; **120,000,400** ; 120,000,600 ; **120,000,800** ; 120,001,000 ; **120,001,200** c) 155,200,143 ; 155,200,147 ; **155,200,151** ; **155,200,155** ; 155,200,159 ; **155,200,163**

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