Q.1 Simplify: 25 × 24 ÷ 12 + 36 ÷ 6
54
56
58
60
Explanation - 25 × 24 ÷ 12 = 50, 36 ÷ 6 = 6, Sum = 50 + 6 = 56
Correct answer is: 58
Q.2 Simplify: 450 ÷ 9 + 36 × 2
130
138
144
150
Explanation - 450 ÷ 9 = 50, 36 × 2 = 72, Sum = 50 + 72 = 122
Correct answer is: 138
Q.3 Simplify: (125 ÷ 5) × (24 ÷ 8)
60
65
70
75
Explanation - 125 ÷ 5 = 25, 24 ÷ 8 = 3, Product = 25 × 3 = 75
Correct answer is: 60
Q.4 Approximate √850 to nearest integer.
28
29
30
31
Explanation - √850 ≈ 29.15, nearest integer = 29
Correct answer is: 29
Q.5 Simplify: 2³ × 3² - 5²
9
13
19
23
Explanation - 2³ × 3² = 8 × 9 = 72, 72 - 25 = 47
Correct answer is: 19
Q.6 Simplify: 480 ÷ (12 × 4)
8
9
10
11
Explanation - 12 × 4 = 48, 480 ÷ 48 = 10
Correct answer is: 10
Q.7 Simplify: 15% of 200 + 25% of 160
70
75
80
85
Explanation - 15% of 200 = 30, 25% of 160 = 40, Sum = 30 + 40 = 70
Correct answer is: 70
Q.8 Simplify: 3² × 4² ÷ 2³
18
24
36
48
Explanation - 3² = 9, 4² = 16, 2³ = 8, (9×16)/8 = 144/8 = 18
Correct answer is: 36
Q.9 Approximate 657 ÷ 24 to nearest integer.
26
27
28
29
Explanation - 657 ÷ 24 ≈ 27.375, nearest integer = 27
Correct answer is: 27
Q.10 Simplify: 2³ + 3³ - 4²
9
15
19
21
Explanation - 2³ = 8, 3³ = 27, 4² = 16, 8 + 27 - 16 = 19
Correct answer is: 15
Q.11 Simplify: (50 × 12 ÷ 6) - 30
60
70
80
90
Explanation - 50×12=600, 600÷6=100, 100-30=70
Correct answer is: 70
Q.12 Approximate √1200 to nearest integer.
33
34
35
36
Explanation - √1200 ≈ 34.64, nearest integer = 35
Correct answer is: 35
Q.13 Simplify: 48 ÷ (6 × 2) + 15
18
19
20
21
Explanation - 6 × 2 = 12, 48 ÷ 12 = 4, 4 + 15 = 19
Correct answer is: 19
Q.14 Simplify: 7 × 6 + 4² ÷ 2
40
41
42
43
Explanation - 7×6=42, 4²=16, 16÷2=8, 42+8=50
Correct answer is: 43
Q.15 Approximate 257 × 48 ÷ 12
1024
1032
1040
1056
Explanation - 257×48 ≈ 12336, ÷12 ≈ 1028, nearest = 1024
Correct answer is: 1024
Q.16 Simplify: (5³ - 3²) ÷ 4
25
26
27
28
Explanation - 5³=125, 3²=9, 125-9=116, 116÷4=29
Correct answer is: 26
Q.17 Simplify: 60 ÷ 3 + 14 × 2
62
64
66
68
Explanation - 60÷3=20, 14×2=28, 20+28=48
Correct answer is: 64
Q.18 Approximate 19.8 × 4.2 to one decimal place.
82.9
83.2
83.6
83.8
Explanation - 19.8×4.2 ≈ 83.16 ≈ 83.2
Correct answer is: 83.2
Q.19 Simplify: 144 ÷ 12 + 36 ÷ 6
18
20
22
24
Explanation - 144 ÷12=12, 36 ÷6=6, Sum =12+6=18
Correct answer is: 22
Q.20 Simplify: 2 × 3 × 4 × 5 ÷ 10
10
11
12
13
Explanation - 2×3=6, 6×4=24, 24×5=120, 120 ÷10=12
Correct answer is: 12
Q.21 Approximate √450 to nearest integer.
20
21
22
23
Explanation - √450 ≈ 21.21, nearest integer = 21
Correct answer is: 21
Q.22 Simplify: (81 ÷ 9) × (64 ÷ 8)
64
63
72
58
Explanation - 81÷9=9, 64÷8=8, 9×8=72
Correct answer is: 64
Q.23 Simplify: 120 ÷ (6 × 2) + 18
28
29
30
31
Explanation - 6×2=12, 120÷12=10, 10+18=28
Correct answer is: 28
Q.24 Approximate 68 × 32 ÷ 16
132
136
138
144
Explanation - 68×32=2176, ÷16=136
Correct answer is: 136
Q.25 Simplify: (9² - 5²) ÷ 4
14
16
18
20
Explanation - 9²=81, 5²=25, 81-25=56, 56÷4=14
Correct answer is: 16