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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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