Page 299 - Start Up Mathematics_6

Let’s Evaluate Try It Out!
1.
3 4 7
–11 –10 –5 0 5 10 13 5 5 5
2. –10 3. –3 4. –31 5. 2 6. –2 2 2 4
7. smallest: –11; largest: –1 5 5 5
8. smallest: not defined, largest: –20 1 2 3
9. 0, –23, 56, –89, –129 10. –37 5 5 5
Thinking Skills Exercise 7.3
1. –1001, the number which comes on the right is greater. 1. (a) 5 (b) 7 (c) 11 (d) 37
2. Absolute value of an integer is always positive. 7 8 10 13
4
1
11
1
 |–5 + 4| = |–1| = 1 and |–5| + |4| = 5 + 4 = 9, hence, 2. (a) 4 (b) 7 (c) 4 (d) 50
|–5 + 4| < |–5| + |4|. 3. 0 35 15
4. x = 32, y = 3,125 or x = 3,125, y = 32 5. 0 3. (a) 8 (b) 4 (c) 14
Values and Life Skills 4. (a) 3 (b) 13 (c) 43
4
2,000 m ; – 3,000 m 5 4 31 12
5
Exemplar Problems (d) 11 (e) 24 (f) 12
1. c 2. d 3. b 4. b 5. True 1 2 1
6. False 7. +1 8. 30 5. Raj; 6 hour 6. 4 4 m 7. 5 4 km
9. (i) (c) (ii) (e) (iii) (b) (iv) (a) (v) (d) 8. 7 7 km 9. 3 L 10. 1
10. (a) –5 (b) –1 11. 1207 12 4 6
11 7
Chapter 7 11. 1 60 L 12. 3 12 hours
Exercise 7.1 Problems Related to Thinking Skills
1. 5 2. 3 3. 2 4. 3 1. 4 11 2. 10 3. 490; 5
12 7 3 10 15 27 12
5. (a) 4. (a) 6 (b) 1 1 L, 5 1 L
0 1 3 5 6 20 2 2
6 6 6 6 9 1
5. (a) ` 3,33,333 (b) (c)
50 50
(b) 1 2 5 7
0 10 10 10 10 1 Review Exercises

3 3 3 1 Multiple Choice Questions
6. (a) 4 (b) 3 (c) 6 (d) 6
8 6 7 9 1. a 2. b 3. d 4. a 5. b 6. c
34 7 17 39
7. (a) 5 (b) 2 (c) 2 (d) 5 Solve Mentally
True or False
Reason It Out! 1. True 2. False 3. True 4. True 5. False 6. True
b = c Fill in the Blanks
Try It Out! 1. unlike 2. equivalent 3. improper
Not necessarily true 4. simplest; co-prime 5. numerators; denominator
Exercise 7.2 Answer in One Word or a Line
6 6 5 6 1. No 2. Proper 3. 6
1. (a) 9 (b) 9 (c) 9 (d) 9 ; 1
(a), (b) and (d) are equal. 4. 4 5. Improper fraction
2. (a) 18 (b) 6 (c) 2 (d) 21 Let’s Evaluate
25 30
1 1 3 5
3 15
6
5 15
3. (a) 35 (b) 42 4. , , , 1. (a) , (b) 32 16 80
,
,
3 2 4 6
7 21
5 3 1 1 27 37 14 1 10 6
,
,
5. 12 8 4 6 6. Scholar’s section 7. ` 2,000 2. (a) 30 40 15 (b) 3 26 13
,
,,
,
,
291