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Number Practice Questions

IGCSE (Cambridge) · IGCSE Mathematics · 134 free MCQs with instant results and detailed explanations.

134
Total
44
Easy
71
Medium
19
Hard

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Sample Questions from Number

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Q1
Easy
If a rectangle has a length of 8 cm and a width of 3 cm, what is its area?
A. 24 cm²
B. 11 cm²
C. 22 cm²
D. 30 cm²
Show Answer & Explanation
Correct Answer: A
The area of a rectangle is calculated by multiplying its length by its width. Here, Area = Length × Width = 8 cm × 3 cm = 24 cm².
Q2
Easy
What is the value of 8 multiplied by 7?
A. 54
B. 56
C. 64
D. 70
Show Answer & Explanation
Correct Answer: B
8 multiplied by 7 equals 56, which is the result of adding 8 together 7 times or vice versa.
Q3
Easy
Which of the following numbers is a multiple of 5?
A. 22
B. 33
C. 45
D. 60
Show Answer & Explanation
Correct Answer: D
A multiple of 5 ends with either 0 or 5. The number 60 ends with 0, making it a multiple of 5.
Q4
Medium
What is the value of 7^2 + 4^2?
A. 65
B. 49
C. 45
D. 53
Show Answer & Explanation
Correct Answer: A
7^2 is 49 and 4^2 is 16. Adding these gives 49 + 16 = 65.
Q5
Medium
If a number is increased by 20% and then decreased by 20%, what is the final value compared to the original number?
A. It remains the same
B. It increases by 4%
C. It decreases by 4%
D. It decreases by 20%
Show Answer & Explanation
Correct Answer: C
Increasing by 20% and then decreasing by 20% results in a net decrease of 4% from the original value.
Q6
Medium
A recipe requires 2.5 kg of flour. If you want to make half the recipe, how much flour do you need?
A. 1.25 kg
B. 2 kg
C. 1 kg
D. 3 kg
Show Answer & Explanation
Correct Answer: A
To make half the recipe, you divide the amount of flour by 2: 2.5 kg ÷ 2 = 1.25 kg.
Q7
Medium
What is the value of 7 to the power of 3?
A. 343
B. 21
C. 49
D. 28
Show Answer & Explanation
Correct Answer: A
7 to the power of 3 means 7 multiplied by itself three times, which equals 7 x 7 x 7 = 343.
Q8
Hard
A number is increased by 20% and then decreased by 20%. What is the final value of the number if the original number was 100?
A. 100
B. 96
C. 104
D. 80
Show Answer & Explanation
Correct Answer: B
Increasing by 20% gives 120, and decreasing by 20% of 120 (which is 24) results in 96. So the final value is 96.
Q9
Hard
A shopkeeper bought a shirt for $30 and sold it at a 20% profit. What was the selling price of the shirt?
A. $36
B. $32
C. $30
D. $38
Show Answer & Explanation
Correct Answer: A
To find the selling price, calculate 20% of the cost price ($30), which is $6. Adding this to the cost price gives us $36.
Q10
Hard
If 5 times a number decreased by 7 equals 13, what is the number?
A. 4
B. 5
C. 3
D. 2
Show Answer & Explanation
Correct Answer: A
To solve the equation 5x - 7 = 13, add 7 to both sides to get 5x = 20. Dividing by 5 gives x = 4, which is the required number.

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More IGCSE Mathematics Chapters

1 Algebra and Graphs
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3 Geometry
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5 Trigonometry
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6 Vectors and Transformations
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8 Statistics
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Number — IGCSE (Cambridge) IGCSE Mathematics Practice Questions Online

This page contains 134 practice MCQs for the chapter Number in IGCSE (Cambridge) IGCSE Mathematics. The questions are organized by difficulty — 44 easy, 71 medium, 19 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.