## RS Aggarwal Class 6 Solutions Chapter 1 Number System Ex 1E

These Solutions are part of RS Aggarwal Solutions Class 6. Here we have given RS Aggarwal Solutions Class 6 Chapter 1 Number System Ex 1E

**Other Exercises**

- RS Aggarwal Solutions Class 6 Chapter 1 Number System Ex 1A
- RS Aggarwal Solutions Class 6 Chapter 1 Number System Ex 1B
- RS Aggarwal Solutions Class 6 Chapter 1 Number System Ex 1C
- RS Aggarwal Solutions Class 6 Chapter 1 Number System Ex 1D
- RS Aggarwal Solutions Class 6 Chapter 1 Number System Ex 1E
- RS Aggarwal Solutions Class 6 Chapter 1 Number System Ex 1F
- RS Aggarwal Solutions Class 6 Chapter 1 Number System Ex 1G
- RS Aggarwal Solutions Class 6 Chapter 1 Number System Ex 1H

**Estimate each of the following products by rounding off each number to the nearest ten.**

**Question 1.**

**Solution:**

(38 x 63)

38 estimated to the nearest ten = 40

63 estimated to the nearest ten = 60

∴ 40 x 60

= 2400 Ans.

**Question 2.**

**Solution:**

(54 x 47)

54 estimated to the nearest ten = 50

47 estimated to the nearest ten = 50

∴ 50 x 50

= 2500 Ans.

**Question 3.**

**Solution:**

(28 x 63)

28 estimated to the nearest ten = 30

63 estimated to the nearest ten = 60

∴ 30 x 60

= 1800 Ans.

**Question 4.**

**Solution:**

(42 x 75)

42 estimated to the nearest ten = 40

75 estimated to the nearest ten = 80

∴ 40 x 80

= 3200 Ans.

**Question 5.**

**Solution:**

(64 x 58)

64 estimated to the nearest ten = 60

58 estimated to the nearest ten = 60

∴ 60 x 60

= 3600 Ans.

**Question 6.**

**Solution:**

(15 x 34)

15 estimated to the nearest ten = 20

34 estimated to the nearest ten = 30

∴ 20 x 30

= 600 Ans.

**Estimate each of the following products by rounding off each number to the nearest hundred :**

**Question 7.**

**Solution:**

(376 x 123)

376 estimated to the nearest hundred = 400

123 estimated to the nearest hundred = 100

∴ 400 x 100

= 40000 Ans.

**Question 8.**

**Solution:**

(264 x 147)

264 estimated to the nearest hundred = 300

147 estimated to the nearest hundred = 100

∴ 300 x 100

= 30000 Ans.

**Question 9.**

**Solution:**

423 x 158)

423 estimated to the nearest hundred = 400

158 estimated to the nearest hundred = 200

∴ 400 x 200

= 80000 Ans.

**Question 10.**

**Solution:**

(509 x 179)

509 estimated to the nearest hundred = 500

179 estimated to the nearest hundred = 200

∴ 500 x 200

= 100000 Ans.

**Question 11.**

**Solution:**

(392 x 138)

392 estimated to the nearest hundred = 400

138 estimated to the nearest hundred = 100

∴ 400 x 100

= 40000 Ans.

**Question 12.**

**Solution:**

(271 x 339)

271 estimated to the nearest hundred = 300

339 estimated to the nearest hundred = 300

∴ 300 x 300

= 90000 Ans.

**Estimate each of the following products by rounding off the first number upwards and the second number downwards:**

**Question 13.**

**Solution:**

(183 x 154)

183 is rounded off upwards = 200

154 is rounded off downwards = 100

∴ 200 x 100

= 20000 Ans.

**Question 14.**

**Solution:**

(267 x 146)

267 is rounded off upwards = 300

146 is rounded off downwards = 100

∴ 300 x 100

= 30000 Ans.

**Question 15.**

**Solution:**

(359 x 76)

359 is rounded off upwards = 400

76 is rounded off downwards = 70

∴ 400 x 70

= 28000 Ans.

**Question 16.**

**Solution:**

(472 x 158)

472 is rounded off upwards = 500

158 is rounded off downwards = 100

∴ 500 x 100

= 50000 Ans.

**Question 17.**

**Solution:**

(680 x 164)

680 is rounded off upwards = 700

164 is rounded off downwards = 100

∴ 700 x 100

= 70000 Ans.

**Question 18.**

**Solution:**

(255 x 350)

255 is rounded off upwards = 300

350 is rounded off downwards = 300

∴ 300 x 300

= 90000 Ans.

**Estimate each of the following products by rounding off the first number downwards and the second number upwards:**

**Question 19.**

**Solution:**

(356 x 278)

356 is rounded off downwards = 300

278 is rounded off upwards = 300

∴ 300 x 300

= 90000 Ans.

**Question 20.**

**Solution:**

(472 x 76)

472 is rounded off downwards = 400

76 is rounded off upwards = 80

∴ 400 x 80

= 32000 Ans.

**Question 21.**

**Solution:**

(578 x 369)

578 is rounded off downwards = 500

369 is rounded off upwards = 400

∴ 500 x 400

= 200000 Ans.

Hope given RS Aggarwal Solutions Class 6 Chapter 1 Number System Ex 1E are helpful to complete your math homework.

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