Everyday Science MCQs

Scientific Notation and Significant Figures MCQs with Answers

What is 2.5 x 10^4 in standard notation?
a) 250
b) 2500
c) 25,000
d) 250,000
Answer: c) 25,000

Which of the following numbers has the greatest number of significant figures?
a) 0.003
b) 0.0030
c) 0.00300
d) 0.003000
Answer: d) 0.003000

Express 9,500,000 in scientific notation.
a) 9.5 x 10^5
b) 9.5 x 10^6
c) 9.5 x 10^7
d) 9.5 x 10^8
Answer: b) 9.5 x 10^6

How many significant figures are in the number 0.0508?
a) 2
b) 3
c) 4
d) 5
Answer: c) 4

Convert 0.00675 to scientific notation.
a) 6.75 x 10^-3
b) 6.75 x 10^-4
c) 6.75 x 10^-5
d) 6.75 x 10^-6
Answer: b) 6.75 x 10^-4

What is the result of (5.4 x 10^3) + (3.2 x 10^2)?
a) 8.6 x 10^3
b) 5.4 x 10^5
c) 3.2 x 10^2
d) 5.4 x 10^3 + 3.2 x 10^2
Answer: a) 8.6 x 10^3

How many significant figures are in the number 240,000?
a) 2
b) 3
c) 4
d) 5
Answer: b) 3

Express 0.0000645 in scientific notation.
a) 6.45 x 10^-6
b) 6.45 x 10^-5
c) 6.45 x 10^-4
d) 6.45 x 10^-3
Answer: a) 6.45 x 10^-6

What is the result of (4.5 x 10^3) x (2.0 x 10^4)?
a) 9.0 x 10^7
b) 9.0 x 10^12
c) 9.0 x 10^16
d) 9.0 x 10^24
Answer: b) 9.0 x 10^12

How many significant figures are in the number 50.0?
a) 2
b) 3
c) 4
d) 5
Answer: c) 4

Convert 8.95 x 10^-7 to standard notation.
a) 0.00000895
b) 0.000000895
c) 0.0000000895
d) 0.00000000895
Answer: d) 0.00000000895

Express 6,200,000,000 in scientific notation.
a) 6.2 x 10^6
b) 6.2 x 10^7
c) 6.2 x 10^8
d) 6.2 x 10^9
Answer: d) 6.2 x 10^9

What is the result of (2.4 x 10^5) – (1.5 x 10^4)?
a) 1.5 x 10^1
b) 2.4 x 10^5 – 1.5 x 10^4
c) 2.25 x 10^5
d) 2.4 x 10^5 + 1.5 x 10^4
Answer: c) 2.25 x 10^5

How many significant figures are in the number 1.000?
a) 1
b) 2
c) 3
d) 4
Answer: d) 4

Convert 4.2 x 10^-2 to standard notation.
a) 0.042
b) 0.0042
c) 0.00042
d) 0.000042
Answer: b) 0.0042

What is 3.0 x 10^2 divided by 6.0 x 10^1?
a) 0.5 x 10^1
b) 0.5
c) 5.0
d) 5.0 x 10^0
Answer: c) 5.0

How many significant figures are in the number 3000?
a) 1
b) 2
c) 3
d) 4
Answer: c) 3

Express 0.0000723 in scientific notation.
a) 7.23 x 10^-6
b) 7.23 x 10^-5
c) 7.23 x 10^-4
d) 7.23 x 10^-3
Answer: b) 7.23 x 10^-5

What is the result of (6.8 x 10^3) x (9.0 x 10^4)?
a) 6.8 x 10^7
b) 6.8 x 10^12
c) 6.8 x 10^16
d) 6.8 x 10^24
Answer: a) 6.8 x 10^7

How many significant figures are in the number 0.02050?
a) 2
b) 3
c) 4
d) 5
Answer: d) 5

Convert 5.6 x 10^-8 to standard notation.
a) 0.000000056
b) 0.0000000056
c) 0.00000000056
d) 0.000000000056
Answer: d) 0.000000000056

Express 7,500,000,000 in scientific notation.
a) 7.5 x 10^6
b) 7.5 x 10^7
c) 7.5 x 10^8
d) 7.5 x 10^9
Answer: d) 7.5 x 10^9

What is the result of (1.8 x 10^6) – (6.7 x 10^5)?
a) 1.1 x 10^1
b) 1.8 x 10^6 – 6.7 x 10^5
c) 1.1 x 10^6
d) 1.8 x 10^6 + 6.7 x 10^5
Answer: c) 1.1 x 10^6

How many significant figures are in the number 1000.0?
a) 1
b) 2
c) 3
d) 5
Answer: d) 5

Convert 9.45 x 10^-4 to standard notation.
a) 0.00000945
b) 0.000000945
c) 0.0000000945
d) 0.00000000945
Answer: c) 0.0000000945

What is 4.0 x 10^3 divided by 2.0 x 10^1?
a) 0.5 x 10^2
b) 0.5
c) 5.0
d) 5.0 x 10^0
Answer: a) 0.5 x 10^2

How many significant figures are in the number 50000?
a) 1
b) 2
c) 3
d) 5
Answer: d) 5

Express 0.00000507 in scientific notation.
a) 5.07 x 10^-8
b) 5.07 x 10^-7
c) 5.07 x 10^-6
d) 5.07 x 10^-5
Answer: c) 5.07 x 10^-6

What is the result of (3.5 x 10^3) x (1.2 x 10^4)?
a) 3.5 x 10^7
b) 3.5 x 10^12
c) 3.5 x 10^16
d) 3.5 x 10^24
Answer: a) 3.5 x 10^7

How many significant figures are in the number 0.005040?
a) 2
b) 3
c) 4
d) 5
Answer: c) 4

Convert 7.8 x 10^-9 to standard notation.
a) 0.000000078
b) 0.0000000078
c) 0.00000000078
d) 0.000000000078
Answer: d) 0.000000000078

Express 4,300,000,000 in scientific notation.
a) 4.3 x 10^6
b) 4.3 x 10^7
c) 4.3 x 10^8
d) 4.3 x 10^9
Answer: d) 4.3 x 10^9

What is the result of (7.2 x 10^5) – (2.8 x 10^4)?
a) 4.4 x 10^1
b) 7.2 x 10^5 – 2.8 x 10^4
c) 6.4 x 10^5
d) 7.2 x 10^5 + 2.8 x 10^4
Answer: c) 6.4 x 10^5

How many significant figures are in the number 1000?
a) 1
b) 2
c) 3
d) 4
Answer: c) 3

Convert 6.02 x 10^-6 to standard notation.
a) 0.00000602
b) 0.000000602
c) 0.0000000602
d) 0.00000000602
Answer: d) 0.00000000602

What is 1.5 x 10^2 divided by 3.0 x 10^1?
a) 0.5 x 10^1
b) 0.5
c) 5.0
d) 5.0 x 10^0
Answer: c) 5.0

How many significant figures are in the number 600000?
a) 1
b) 2
c) 3
d) 6
Answer: d) 6

Express 0.000025 in scientific notation.
a) 2.5 x 10^-8
b) 2.5 x 10^-7
c) 2.5 x 10^-6
d) 2.5 x 10^-5
Answer: d) 2.5 x 10^-5

What is the result of (9.8 x 10^4) x (3.0 x 10^3)?
a) 9.8 x 10^7
b) 9.8 x 10^12
c) 9.8 x 10^16
d) 9.8 x 10^24
Answer: b) 9.8 x 10^12

How many significant figures are in the number 0.07050?
a) 2
b) 3
c) 4
d) 5
Answer: d) 5

Convert 3.5 x 10^-10 to standard notation.
a) 0.00000000035
b) 0.0000000035
c) 0.000000000035
d) 0.0000000000035
Answer: c) 0.000000000035

Express 5,000,000,000 in scientific notation.
a) 5.0 x 10^6
b) 5.0 x 10^7
c) 5.0 x 10^8
d) 5.0 x 10^9
Answer: d) 5.0 x 10^9

What is the result of (3.2 x 10^5) – (1.7 x 10^4)?
a) 1.5 x 10^1
b) 3.2 x 10^5 – 1.7 x 10^4
c) 1.5 x 10^5
d) 3.2 x 10^5 + 1.7 x 10^4
Answer: c) 1.5 x 10^5

How many significant figures are in the number 0.9000?
a) 1
b) 2
c) 3
d) 5
Answer: d) 5

Convert 6.75 x 10^-3 to standard notation.
a) 0.000675
b) 0.0000675
c) 0.00000675
d) 0.000000675
Answer: a) 0.000675

What is 2.0 x 10^3 divided by 4.0 x 10^1?
a) 0.5 x 10^2
b) 0.5
c) 5.0
d) 5.0 x 10^0
Answer: c) 5.0

How many significant figures are in the number 4000?
a) 1
b) 2
c) 3
d) 4
Answer: c) 3

Express 0.0000324 in scientific notation.
a) 3.24 x 10^-8
b) 3.24 x 10^-7
c) 3.24 x 10^-6
d) 3.24 x 10^-5
Answer: c) 3.24 x 10^-6

What is the result of (2.6 x 10^4) x (5.0 x 10^3)?
a) 2.6 x 10^7
b) 2.6 x 10^12
c) 2.6 x 10^16
d) 2.6 x 10^24
Answer: a) 2.6 x 10^7

How many significant figures are in the number 0.003500?
a) 2
b) 3
c) 4
d) 5
Answer: d) 5

Convert 4.8 x 10^-6 to standard notation.
a) 0.0000048
b) 0.00000048
c) 0.000000048
d) 0.0000000048
Answer: a) 0.0000048

Express 8,000,000,000 in scientific notation.
a) 8.0 x 10^6
b) 8.0 x 10^7
c) 8.0 x 10^8
d) 8.0 x 10^9
Answer: d) 8.0 x 10^9

What is the result of (3.1 x 10^5) – (1.6 x 10^4)?
a) 1.5 x 10^1
b) 3.1 x 10^5 – 1.6 x 10^4
c) 1.5 x 10^5
d) 3.1 x 10^5 + 1.6 x 10^4
Answer: c) 1.5 x 10^5

How many significant figures are in the number 100.00?
a) 1
b) 2
c) 3
d) 5
Answer: d) 5

Convert 2.85 x 10^-5 to standard notation.
a) 0.00000285
b) 0.000000285
c) 0.0000000285
d) 0.00000000285
Answer: d) 0.00000000285

What is 3.0 x 10^2 divided by 6.0 x 10^0?
a) 0.5 x 10^2
b) 0.5
c) 5.0
d) 5.0 x 10^0
Answer: c) 5.0

How many significant figures are in the number 9000?
a) 1
b) 2
c) 3
d) 4
Answer: c) 3

Express 0.0000456 in scientific notation.
a) 4.56 x 10^-8
b) 4.56 x 10^-7
c) 4.56 x 10^-6
d) 4.56 x 10^-5
Answer: d) 4.56 x 10^-5

What is the result of (4.4 x 10^4) x (2.5 x 10^3)?
a) 4.4 x 10^7
b) 4.4 x 10^12
c) 4.4 x 10^16
d) 4.4 x 10^24
Answer: a) 4.4 x 10^7

How many significant figures are in the number 0.0005600?
a) 2
b) 3
c) 4
d) 5
Answer: d) 5

Convert 3.4 x 10^-8 to standard notation.
a) 0.000000034
b) 0.0000000034
c) 0.00000000034
d) 0.000000000034
Answer: d) 0.000000000034

Express 9,200,000,000 in scientific notation.
a) 9.2 x 10^6
b) 9.2 x 10^7
c) 9.2 x 10^8
d) 9.2 x 10^9
Answer: d) 9.2 x 10^9

What is the result of (2.7 x 10^5) – (1.3 x 10^4)?
a) 1.4 x 10^1
b) 2.7 x 10^5 – 1.3 x 10^4
c) 1.4 x 10^5
d) 2.7 x 10^5 + 1.3 x 10^4
Answer: c) 1.4 x 10^5

How many significant figures are in the number 50.00?
a) 1
b) 2
c) 3
d) 5
Answer: d) 5

Convert 6.15 x 10^-4 to standard notation.
a) 0.000615
b) 0.0000615
c) 0.00000615
d) 0.000000615
Answer: c) 0.00000615

What is 3.0 x 10^2 divided by 3.0 x 10^0?
a) 1.0 x 10^2
b) 1.0
c) 10
d) 1.0 x 10^0
Answer: b) 1.0

How many significant figures are in the number 600?
a) 1
b) 2
c) 3
d) 5
Answer: c) 3

Express 0.0000713 in scientific notation.
a) 7.13 x 10^-8
b) 7.13 x 10^-7
c) 7.13 x 10^-6
d) 7.13 x 10^-5
Answer: b) 7.13 x 10^-7

What is the result of (3.9 x 10^4) x (6.0 x 10^3)?
a) 3.9 x 10^7
b) 3.9 x 10^12
c) 3.9 x 10^16
d) 3.9 x 10^24
Answer: a) 3.9 x 10^7

How many significant figures are in the number 0.000450?
a) 2
b) 3
c) 4
d) 5
Answer: c) 4

 

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