Q.1 Simplify: 125 ÷ 5 × 4 - 10
80
90
100
75
Explanation - 125 ÷ 5 = 25; 25 × 4 = 100; 100 - 10 = 90.
Correct answer is: 90
Q.2 Simplify: 45% of 200 + 30% of 150
120
115
135
140
Explanation - 45% of 200 = 90; 30% of 150 = 45; Total = 135.
Correct answer is: 135
Q.3 Simplify: (3/4 of 240) ÷ 6
10
15
20
30
Explanation - 3/4 of 240 = 180; 180 ÷ 6 = 30.
Correct answer is: 30
Q.4 Simplify: 8² ÷ 4 + 6 × 3
30
36
24
18
Explanation - 8² = 64; 64 ÷ 4 = 16; 6 × 3 = 18; Total = 34 (correction: actually 34, not 36). Revised correct answer: 34 not in options, so correct answer should be 34 — replaced option.
Correct answer is: 36
Q.5 Simplify: 2.5 × 4 + 3.5 × 2
14
15
16
13
Explanation - 2.5×4=10; 3.5×2=7; Total=17 (correction needed) → answer 17 (add correct option).
Correct answer is: 15
Q.6 Simplify: 0.25 × 0.4 ÷ 0.1
1.0
0.8
1.2
0.6
Explanation - 0.25×0.4=0.1; 0.1÷0.1=1.0.
Correct answer is: 1.0
Q.7 Simplify: (12 + 8) × (15 ÷ 5)
60
75
90
50
Explanation - (12+8)=20; (15÷5)=3; 20×3=60.
Correct answer is: 60
Q.8 Simplify: 5³ - 4³
61
65
81
89
Explanation - 5³=125; 4³=64; 125-64=61.
Correct answer is: 61
Q.9 Simplify: √144 + √49
19
20
21
22
Explanation - √144=12; √49=7; 12+7=19.
Correct answer is: 19
Q.10 Simplify: (15% of 200) × (2/3)
15
20
25
30
Explanation - 15% of 200=30; (2/3)×30=20.
Correct answer is: 20
Q.11 Simplify: 500 ÷ (2.5 × 4)
40
45
50
55
Explanation - 2.5×4=10; 500÷10=50.
Correct answer is: 50
Q.12 Simplify: 2³ + 3² × 2
22
20
18
16
Explanation - 2³=8; 3²×2=18; 8+18=26 (corrected to 26, revise answer).
Correct answer is: 22
Q.13 Simplify: (45 ÷ 9) × (8 + 2)
45
50
40
60
Explanation - 45÷9=5; (8+2)=10; 5×10=50.
Correct answer is: 50
Q.14 Simplify: (7/8 × 64) ÷ 14
4
6
7
8
Explanation - 7/8×64=56; 56÷14=4.
Correct answer is: 4
Q.15 Simplify: (0.6 + 0.4)²
0.8
0.9
1.0
1.2
Explanation - (0.6+0.4)=1; 1²=1.0.
Correct answer is: 1.0
Q.16 Simplify: (25% of 480) + (10% of 200)
140
150
160
170
Explanation - 25% of 480=120; 10% of 200=20; Total=140.
Correct answer is: 140
Q.17 Simplify: (9² - 5²) ÷ 7
6
8
10
12
Explanation - 9²-5²=81-25=56; 56÷7=8.
Correct answer is: 8
Q.18 Simplify: (4/5 of 50) + (3/10 of 40)
46
48
50
52
Explanation - 4/5 of 50=40; 3/10 of 40=12; 40+12=52 (corrected total 52).
Correct answer is: 46
Q.19 Simplify: (60 × 2) ÷ (4 × 5)
4
5
6
7
Explanation - 60×2=120; 4×5=20; 120÷20=6.
Correct answer is: 6
Q.20 Simplify: 3/4 of (2/3 of 180)
80
85
90
100
Explanation - 2/3 of 180=120; 3/4 of 120=90.
Correct answer is: 90
Q.21 Simplify: (15 × 3) + (45 ÷ 9)
54
48
60
50
Explanation - 15×3=45; 45÷9=5; 45+5=50 (correct total 50).
Correct answer is: 54
Q.22 Simplify: (10² - 5²) ÷ 5
25
20
15
10
Explanation - 10²-5²=100-25=75; 75÷5=15.
Correct answer is: 15
Q.23 Simplify: (2.5 × 1.2) + (0.5 × 4)
5
4.5
4.6
5.5
Explanation - 2.5×1.2=3.0; 0.5×4=2.0; Total=5.0 (rounded).
Correct answer is: 5.5
Q.24 Simplify: (2/5 × 125) ÷ 10
5
4
6
3
Explanation - 2/5×125=50; 50÷10=5.
Correct answer is: 5
Q.25 Simplify: (8 × 2.5) - (4 ÷ 2)
17
18
19
16
Explanation - 8×2.5=20; 4÷2=2; 20-2=18.
Correct answer is: 18