Standard Form Practice Questions
SPM (Malaysia) · SPM Mathematics · 146 free MCQs with instant results and detailed explanations.
146
Total
44
Easy
76
Medium
26
Hard
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Sample Questions from Standard Form
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
Which of the following numbers is in standard form?
A.
3.2 × 10^2
B.
32 × 10^1
C.
0.032 × 10^3
D.
320 × 10^0
Show Answer & Explanation
Correct Answer: A
In standard form, the coefficient must be between 1 and 10. Only option A meets this criterion as 3.2 is within that range.
Q2
Easy
Convert the standard form 6.7 × 10^3 into a whole number.
A.
6700
B.
670
C.
67
D.
6.7
Show Answer & Explanation
Correct Answer: A
To convert 6.7 × 10^3 into a whole number, you multiply 6.7 by 1000, which equals 6700.
Q3
Easy
What is the standard form of the number 300000?
A.
3 x 10^5
B.
30 x 10^4
C.
300 x 10^3
D.
0.3 x 10^6
Show Answer & Explanation
Correct Answer: A
The standard form expresses numbers as a product of a number between 1 and 10 and a power of 10. Here, 300000 can be written as 3 times 10 raised to the power of 5.
Q4
Medium
Which of the following represents the number 0.00034 in standard form?
A.
3.4 x 10^-4
B.
34 x 10^-5
C.
0.34 x 10^-3
D.
34 x 10^-6
Show Answer & Explanation
Correct Answer: A
In standard form, a number is expressed as a product of a number between 1 and 10 and a power of 10. 0.00034 can be written as 3.4 x 10^-4.
Q5
Medium
Convert the number 500000 into standard form.
A.
5 x 10^5
B.
50 x 10^4
C.
500 x 10^3
D.
0.5 x 10^6
Show Answer & Explanation
Correct Answer: A
To convert 500000 into standard form, we express it as 5 multiplied by 10 raised to the power of 5, since 5 is between 1 and 10.
Q6
Medium
Which of the following numbers is equivalent to 6.02 x 10^23?
A.
602000000000000000000000
B.
6.02 x 10^22
C.
60000000000000000000000
D.
6020000000000000000000
Show Answer & Explanation
Correct Answer: A
The number 6.02 x 10^23 means moving the decimal 23 places to the right, which results in 602 followed by 21 zeros, or 602000000000000000000000.
Q7
Medium
A scientist measures a length of 0.0000078 meters. What is this measurement in standard form?
A.
7.8 x 10^-6
B.
78 x 10^-7
C.
0.78 x 10^-5
D.
78 x 10^-8
Show Answer & Explanation
Correct Answer: A
In standard form, 0.0000078 is represented as 7.8 x 10^-6. The decimal is moved 6 places to the right, giving a negative exponent.
Q8
Hard
Which of the following is equivalent to the number 0.000045 in standard form?
A.
4.5 × 10^-5
B.
45 × 10^-6
C.
0.45 × 10^-4
D.
4.5 × 10^-6
Show Answer & Explanation
Correct Answer: A
To express 0.000045 in standard form, we move the decimal point 5 places to the right, resulting in 4.5. Thus, it can be written as 4.5 × 10^-5, as we need to account for the movement of the decimal point.
Q9
Hard
Which of the following expressions represents the product of (3.2 × 10^4) and (2 × 10^3) in standard form?
A.
6.4 × 10^7
B.
6.4 × 10^8
C.
0.64 × 10^7
D.
0.64 × 10^8
Show Answer & Explanation
Correct Answer: A
To find the product of (3.2 × 10^4) and (2 × 10^3), multiply the coefficients (3.2 and 2) to get 6.4, and add the exponents (4 and 3) to get 7. Thus, the product is 6.4 × 10^7.
Q10
Hard
Which of the following numbers is expressed in standard form correctly?
A.
4.5 × 10^3
B.
0.045 × 10^2
C.
12.3 × 10^5
D.
0.0037 × 10^4
Show Answer & Explanation
Correct Answer: A
Option A is correct because it follows the standard form where the coefficient (4.5) is between 1 and 10, while the power of ten (10^3) indicates the magnitude. Other options do not conform to this rule.
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Standard Form — SPM (Malaysia) SPM Mathematics Practice Questions Online
This page contains 146 practice MCQs for the chapter Standard Form in SPM (Malaysia) SPM Mathematics. The questions are organized by difficulty — 44 easy, 76 medium, 26 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.