Mathematics for IGCSE & O level - The Four Operations (Section 7)

1
Which of the following statements are true regarding equivalent fractions?
Risposta
A
C
2
What is the circumference of a circle with a radius of 2?
Risposta
(B)
4π
3
Which operations are performed before addition and subtraction in the order of operations?
Risposta
A
B
C
D
4
What is 2/5 as a decimal?
Risposta
(C)
0.4
5
Which of the following describes a proper fraction?
Risposta
(B)
The denominator is greater than the numerator.
6
What is the decimal equivalent of 1/8?
Risposta
(A)
0.125
7
Which of these is a multiple of 7?
Risposta
(A)
14
8
How many faces does a cube have?
Risposta
(B)
6
9
What is the value of 4^2?
Risposta
(C)
16
10
What is 15% of 60?
Risposta
(B)
9
11
Which unit is used to measure the weight of an object?
Risposta
(C)
Gram
12
What is the result of 3/8 + 1/4?
Risposta
(C)
5/8
13
Which step comes immediately after you find the Lowest Common Multiple (LCM) when adding fractions?
Risposta
(B)
Add the numerators
14
What is the formula for the area of a parallelogram?
Risposta
(D)
a * h
15
What is the sum of 0.5 and 0.75?
Risposta
(B)
1.25
16
Which of the following shapes have four sides?
Risposta
B
D
17
Which calculation results in the smallest answer?
Risposta
(A)
10 - 5
18
Simplify: 1/2 + 1/4 - 1/8
Risposta
(B)
3/8
19
What is the area of a triangle with a base of 6cm and a height of 4cm?
Risposta
(B)
12 cm²
20
If you need to find out how many 1/4 are in 2, what calculation do you need to do?
Risposta
(D)
2 ÷ 1/4
21
What is the value of 2^3?
Risposta
(C)
8
22
Which calculation(s) will equal to a positive number?
Risposta
A
B
23
Which shows how to calculate 3/4 + 1/8?
Risposta
(C)
(6/8) + (1/8)
24
What is 6 - 2 * 2?
Risposta
(B)
4
25
How do you find the answer to a question like $\frac{1}{2} + \frac{1}{4}$?
Risposta
(B)
Find a common denominator and add the numerators.
26
What is 1/3 as a percentage (approximately)?
Risposta
(C)
33%
27
What does 3.0 * 0.5 equal?
Risposta
(B)
1.5
28
Which of the following is equal to 0.5?
Risposta
(C)
1/2
29
What is the value of x in the equation: 2x - 4 = 6?
Risposta
(B)
5
30
What are the key steps in simplifying a ratio?
Risposta
A
B
31
What is the result of 5/6 - 1/3 ?
Risposta
(B)
1/6
32
Which statements are true regarding division and multiplication?
Risposta
A
B
33
What do you need to consider when finding the average (mean) of a set of numbers?
Risposta
A
B
34
How do you calculate the area of a circle?
Risposta
(C)
πr²
35
Which of the following is the same as multiplying two negative integers?
Risposta
A
B
36
If a circle has a radius of 3, what is its circumference (approximately)? (Use π ≈ 3.14)
Risposta
(D)
28.26
37
What is the simplified form of the fraction 10/15?
Risposta
(C)
2/3
38
Simplify: $3/4 cdot 5/6 - 1/2$
Risposta
(A)
1/8
39
What does it mean to simplify a fraction?
Risposta
(C)
To divide the numerator and denominator by their greatest common factor.
40
What is the product of a positive and negative number?
Risposta
(A)
Negative number
41
What is the simplified form of 24/36?
Risposta
(B)
2/3
42
Which of the following will result in a positive answer?
Risposta
A
D
43
What is the result when you divide a positive number by a negative number?
Risposta
(A)
A negative number
44
What is the result when you calculate 6/7 ÷ 3?
Risposta
(A)
2/7
45
What is 1/2 + 0.5?
Risposta
(C)
1
46
What is the value of 0.2 + 0.8?
Risposta
(B)
1
47
If you have 3/4 of a pizza and eat 1/8 of it, how much pizza do you have left?
Risposta
(C)
5/8
48
What is the value of 'm' in the equation m / 5 = 7?
Risposta
(C)
35
49
When multiplying fractions, you should:
Risposta
A
B
D
50
How many sides does a hexagon have?
Risposta
(C)
6