Page 252 - Math Genius C5

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think tank (Page 86) Chapter Assessment
Ali 1. 1 1
Practice time 4B `8900 2. 6 4 pizza 3. `450 4. 5 4 pies
1
1. (a) > (b) < (c) = (d) < (e) > (f) < 5. 16 cookies 6. `16415 7. 17 sq cm 8. 42
3 3 5 9 3 5 4
2. (a) ( b) ( c) ( d) ( e) ( f) 1 5 1 1
4 8 11 24 7 9 9. 10. 26 kg 11. 9 km 12. 45 litres
4 5 12 12 6 3
(g) ( h) 9
11 10 13. 9 km
4 2 9 14 44 20 65 6 1 2 3 5 25
3. (a) 1 , , , ( b) 1 , , 6 , ( c) ,, ,
5 5 5 5 25 25 25 25 2 3 4 6 Chapter 5. Introduction to Decimals
5 7 2 17 15 7 17 5 1 7 2 3
4. (a) ,, , (b) ,, , (c) , , , Practice time 5A
6 9 3 27 16 8 24 12 2 15 5 10
5
2
16
Practice time 4C 1. (a) 10 , 0.5 (b) 100 , 0.16 (c) 1 10 , 1.2
1 17 11 7 3
1. (a) 1 (b) 1 (c) ( d) 3 ( e) 3 (f) 4 5 8
2 20 14 24 4 (d) 1 100 , 1.05 (e) 2 100 , 2.08
29 1 4 19
(g) 6 ( h) 12 ( i) 14 ( j) 11 3. (a) (b) (c) (d) (e) (f) (g) (h) (i) (j)
45 24 5 24
3 13 1 2 3 4 5 18 25 51 43 3
(k) 27 ( l) 6 Fractions 1 2 3 1 2 5
5 42 10 10 10 10 10 100 100 100 100 100
2. (a) 9 ( b) 1 (c) 1 ( d) 1 1 ( e) 10 9 Decimals 0.1 0.2 1.3 2.4 3.5 0.18 0.25 1.51 2.43 5.03
44 96 3 22 10
7 1 31 Challenge Question (Page 103)
(f) 5 ( g) 8 (h) 1
40 17 36 23
7 31 5 63 7 11 Rishi; 100 or 0.23
3. (a) 4 ( b) 5 (c) 7 ( d) 1 ( e) 4 (f) 7
30 60 8 84 12 15 Challenge Question (Page 106)
1
4. 4 2 kg 5. 3 m 6. 7 11 cm 7. 5 litre 10.3
15 6 16 12 Practice time 5B
5 3
8. 2 m 9. 2 kg 1. Tenths Hundredths
24 8
1 
1 
think tank (Page 91) Hundreds Tens Ones    10      100  
`240 (100) (10) (1) .
Practice time 4D (a) 0 . 1 3
7 6 1 (b) 0 . 0 9
1. (a) 1 ( b) 2 (c) 4 (d) 4
8 7 5 (c) 2 . 3 7
1 1 1 1 5 2
2. (a) ( b) ( c) ( d) ( e) (f) (d) 1 2 . 4 8
5 4 9 12 12 45 .
9 7 (e) 1 0 1 7 2
(g) ( h)
80 90 2. (a) Zero point zero nine (b) Seven point zero eight
1 2
3. (a) 30 km (b) 36 kg (c) ( d) 1 hours (c) Thirteen point three seven
6 5 (d) One hundred twenty-eight point seven two
3
1
4. 17 litres 5. 11 part 6. 1 7. 33 kg 3. (a) 0.7 (b) 0.35 (c) 5.4 (d) 2.03 (e) 32.08 (f) 3.11
2 15 2 5 4. (a) 1.7 Place value (b) 2.43 Place value
Practice time 4e 7 tenths 3 hundredths
1 7 5 9 19 20 1 one 4 tenths
1. (a) ( b) ( c) ( d) ( e) (f)
11 3 3 4 14 9 Expanded form: 1 + 0.7 2 ones
9 5 3 1 Expanded form: 2 + 0.4 + 0.03
(g) ( h) ( i) ( j)
2 4 4 4 (c) 17.03 Place value (d) 383.43 Place value
1 1 1 4 1 5 3 hundredths 3 hundredths
2. (a) ( b) (c) ( d) ( e) 4 (f) 8
12 20 10 45 5 9 0 tenths 4 tenths
(g) 18 (h) 25 7 ones 3 ones
2 1 13 37 1 ten 8 tens
3. (a) 3 (b) 4 (c) ( d) ( e) 2 (f) 1
3 2 16 63 Expanded form: 3 hundreds
1 8 10 + 7 + 0.0 + 0.03 Expanded form:
(g) 1 ( h)
39 15 300 + 80 + 3 + 0.4 + 0.03
5 1 (e) 547.77 Place value
4. m 5. 1 m 6. `120 7. 8
9 6 7 hundredths
Mental Maths (Page 96) 7 tenths
1. less 2. 1 3. 16 4. less 7 ones
4 tens
Challenge Question (Page 97) 5 hundreds
6
1. 60 2. 27 Expanded form: 500 + 40 + 7 + 0.7 + 0.07
7 5. (a) 4.2 (b) 3.05 (c) 46.52 (d) 200.4
250 Mathematics-5