一年级 - 数学练习 答案

1 56 10 3 (b), (d) 3C
4 D 1D 2A
1.1 E1
B 1✓ 2✗ 3✗ 4✓
A 18 23 5✓ 6✗ 7✗ 8✓
9 ✗ 10 ✗ 11 ✓
35 42

B 17 26 C 1e 2b 3c 4a 2 (a) (b)
D 1 54 2 53 3 97
C 19 26 33 5 99 6 70
4 59
D 1 4, 5, 6, 7, 8 2 9, 8, 7, 6, 5 7 81

3 7, 6, 5, 4, 3

E 1B 2B 3A E 1 4 + 4 + 4 = 12

F1 21 2 5 + 5 + 5 + 5 + 5 = 25 4

37 F 1B 2A 3C 4A A 15 2 10 3 20
4 50 51 65
1.2 G 1 94 26 7 10
A1
38 3 1 B1

,6 4 11

2 2.2
A 1 7–2=5 2 8–6=2
,1 2
3 10 – 3 = 7
B 1 14 2 17 B 1 (a) 0 (b) 7 (c) 4

C 1 14 2 15 3 19 2 (a) 4 (b) 9 (c) 3
3 (a) 8 (b) 2 (c) 1
D 1 13 2 15 3 15 4 (a) 10 – 5 (b) 12 – 7 (c) 8 – 3

4 11 5 15

E 1A 2B 3D 4B 5 (a) 20 – 14 3
(b) 18 – 12
F 1 13, 14, 15 2 16 (c) 10 – 4

3 (a) 13, 14

(b) 17, 16

1.3 C 17 29 34 46

A 1 28, c 2 32, d 58 66 79 88

3 55, a 4 87, b 9 7 10 4

B 1 59, 57, 55, 53, 51 D 1 12 2 35 3 47 4 63 C 1 RM4 + RM2 = RM6
2 RM3.30 + RM1.20 = RM4.50
2 25, 30, 35, 40, 45 E 1 39 2 50 3 33 3 RM3 – RM2.50 = RM0.50
4 RM10 – RM5 = RM5
3 80, 78, 76, 74, 72 F 1 4 – 1 = 3; 3 – 1 = 2; 2 – 1 = 1;
D1
4 20, 30, 40, 50, 60 1–1=0 2
3
C 2 30 – 10 = 20; 20 – 10 = 10; 4
5
1 5 10 – 10 = 0
40 E 1C 2B 3D 4A
2 3 20 – 4 = 16; 16 – 4 = 12; F 1 (a)
3D 4D
D 1 40 2 80 (b) 60 12 – 4 = 8; 8 – 4 = 4; 4 – 4 = 0
E 1A 2D
F 1 (a) 56, 58 G 1C 2B 3B 4C

2 36 H 18 22

2.1 2 A1 3 2 RM1 RM0.80
A1 3 4 RM1 RM1.00
4 2 RM1 RM1.20
3 1 B1 3 RM1 RM1.40
3 RM1 RM1.60
3 22 6 45 RM5 RM6.00
5 8
C 1 (c), (e) 2 (d), (e)
4
43
6

5

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(b) (c) RM11
2

5

A1 23

45

B 1 (a) (b)

(c) (d)

(e)

23

4

C 12 23 34

45 57 68

7 10 8 12

D 1 c, g 2 d, h 3 a, i

4 e, j 5 b, f

E 1A 2B 3C 4C

F1 12 12

11 1 2 11 1 2
10 10

93 93

84 84
765 765

2 2010 5 31

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