son.
C. V-37
A.
Multiple Choice: Write the letter of your answer on a separate answer sheet.
1) What number from the given below is not belong to real numbers?
A.-8.77777...
B. -V64
D. 3 V10
2) Which of the real numbers below is a rational but not an integer?
.-1
B. 4.8
C. 100
D.9 x 102
3) What is 0.000000412 written in scientific notation?
A. 0.4 x 1210
B. 4.12 x 10-7
C. 41.2 x 108
D. 412 x 10-9
4) What is 8.03 x 10000 written in standard form?
A. 803
B. 8030
C. 80300
D. 803000
5) What is the quotient of (6 x 105) + (1.5 x 10)?
A) 4 x 102
B.9 x 102
C. 4.5 x 10
D. 7.5 x 108
6) Express the product in standard form (3.2 x 10°) (5 x 10-2).
0.00016
B. 0.0016
C. 0.16
D. 1.6
7) Find the value of n in 3.75 x 10"= 0.000375
A. -6
B. -5
C.-4
D. -3
8) Year 2020 is really unforgettable to the lives of people because of the COVID-19 pandemic that
almost 20 million of people around the world got affected and almost a million had died. Which
is the correct scientific notation for the total number of those affected with COVID-19?
A. 1x 106
B. 2 x 107
C. 0.2 x 108
D. 2.1 x 108
9) A land owner will fly to Canada to live with his family there for good. He would like to sell his
10,000 square km real property for P6000.00 per square meter. What is the total amount of his
property in scientific notation?
A. P60,000
B. 6 x 10°
C. 6 x 1011
D. 6 x 1013
10) It is estimated that the world's population this year 2020 is about 7.8 x 10° which equal to:
A. 780,000,000,000 B. 78,000,000,000 C. 7,800,000,000 D. 780,000,000
11) About how much is the difference between the diameters of a dust particle which is about
5x107 meter and a pollen grain which is about 5 x 10-6 meter?
A. 1x 10-
B. 5 x 10-13
C. 0.00000025
D. 0.0000045
12) A candy factory can produce 2.5 x 10 candies a day, so how many candies they can produce in
one week?
A. 1,250,000,000 B. 1.75 x 10°
C. 1.25 x 100
D. 17,500,000,000
13) Which one is equivalent to 64250?
A. 6000+400+20+5+0
C. 6.425 x 10
B. 6.425 x 10
D. (6x104)+ (4x10')+ (2x10 ) + (5x10)
14) Convert (3x104) + (4x10- )+ (7x10") in standard form.
A. 0.0347
B. 0.347
C. 3.47
D. 34.7
15) How many kilograms of powdered milk is needed for a piece of milky candy if 3.5x10° kg of
milk can make 2.5x10 pieces of milky candy?
A. 1.4 x 10
B. 1.4 x 10
C. 1.4 x 10
D. 1.4 x 10-​