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Mathematics for IGCSE & O level - The Four Operations (Section 8)

1
Which of these operations should be done first in the equation: 10 + 5 * 2 - 3?
Answer
(B)
Multiplication
2
Which geometric shape is defined by the formula πr² ?
Answer
(C)
Circle
3
What type of angle is greater than 90 degrees but less than 180 degrees?
Answer
(C)
Obtuse
4
Which operation is performed first in the following expression: $2 + 3 cdot 4 - 6 \div 2$?
Answer
(C)
Multiplication
5
If the diameter of a circle is 10 cm, what is its radius?
Answer
(B)
5 cm
6
Which of the following fractions is equal to 0.75?
Answer
(C)
3/4
7
Which operations need the use of brackets?
Answer
(C)
Applying Order of operations.
8
What is the first step when calculating $2/5 \div 3/4$?
Answer
(B)
Find the reciprocal of 3/4
9
What is $\frac{3}{5} \times 2\frac{1}{2}$?
Answer
(A)
3/2
10
Which of the following is NOT a way to describe a fraction?
Answer
(D)
A whole number
11
If a shirt costs $20 and is on sale for 25% off, what is the sale price?
Answer
(C)
$15
12
What is the Lowest Common Multiple (LCM) of 4 and 6?
Answer
(B)
12
13
Which of the following is a polygon with 7 sides?
Answer
(B)
Heptagon
14
If the price of an item is $2.50 and it increases by $0.75, what is the new price?
Answer
(C)
$3.25
15
Which of the following is the correct order of operations?
Answer
(A)
PEMDAS
16
What is the value of 'y' in the equation y / 3 = 5?
Answer
(C)
15
17
Which of the following results in a negative number?
Answer
B
C
18
Which shape has 8 sides?
Answer
(C)
Octagon
19
What is the value of the expression $ \frac{1}{2} \div \frac{1}{4}$?
Answer
(C)
2
20
What is 6 divided by 1/2 ?
Answer
(C)
12
21
Which of the following is the same as 5/6 * 2?
Answer
(C)
10/6
22
What is the decimal equivalent of 3/4?
Answer
(C)
0.75
23
What is 30% of 70?
Answer
(A)
21
24
What is the value of 1.25 + 0.75?
Answer
(C)
2
25
What is the value of x in the equation: x + 5 = 10?
Answer
(C)
5
26
What is $25.7 \div 0.08$?
Answer
(C)
321.25
27
What are the first steps to add or subtract fractions?
Answer
A
D
28
What is the perimeter of a square with a side of 4cm?
Answer
(C)
16 cm
29
What is 9 - 4 * 1?
Answer
(A)
5
30
Which of the following is equivalent to $2 \frac{1}{4} \times 3$?
Answer
(B)
6 \frac{3}{4}
31
What is the diameter of a circle if the radius is 7cm?
Answer
(C)
14 cm
32
Which of the following statements is correct regarding order of operations?
Answer
A
B
C
33
If you are dividing by a fraction, what is the first step?
Answer
(B)
Find the reciprocal of the divisor
34
What is the decimal equivalent of 7/10?
Answer
(B)
0.7
35
What is 1/2 of 16?
Answer
(B)
8
36
Which of the following correctly represents the relationship between a radius and a diameter of a circle?
Answer
A
B
37
What does the term 'reciprocal' mean?
Answer
(C)
The multiplicative inverse of a number
38
What is the name of a 3-sided polygon?
Answer
(C)
Triangle
39
Which will result in a positive number?
Answer
(D)
A negative number multiplied by a negative number.
40
Which of the following expression represents the calculation $20 \div 0.4$?
Answer
(B)
$200 \div 4$
41
What is 8 - 3 * 2?
Answer
(B)
10
42
What is the area of a circle with a diameter of 10 cm? (Use π ≈ 3.14)
Answer
(D)
100 cm²
43
What is the value of 3^3?
Answer
(C)
27
44
Which of the following is correct based on the information on multiplying and dividing with negative numbers?
Answer
B
C
D
45
What is the name of a 5-sided polygon?
Answer
(B)
Pentagon
46
Which of these will result in a negative product?
Answer
C
D
47
What is the value of 2^4?
Answer
(C)
16
48
If a recipe calls for 1/2 cup of flour and you want to double the recipe, how much flour do you need?
Answer
(B)
1 cup
49
What is $3.25 \times 100$?
Answer
(C)
325
50
What is 20% of 50?
Answer
(B)
10