16. Which of the following number is NOT a counting number? *
1 point
A. 0
B. 10
C. 15
D. 20
17. Which of the following is a rational number? *
1 point
A. √2
B. π
C. 1.0023
D. -√10
18. Which of the following statement is NOT true? *
1 point
A. All real numbers are rational.
B. Zero is a whole number.
C. All counting numbers are whole numbers.
D. All repeating decimals are rational numbers.
19. Which of the following is NOT a subset of rational numbers? *
1 point
A. Irrational number
B. Integers
C. Repeating decimal
D. Whole
20. What symbol must be in the blank to make the statement true? *
1 point
Captionless Image
A. <
B. >
C. =
D. ≥
21. If the integers 21,14,-2,11,-10,6 and-5 are arranged in order from least to greatest, which integer comes first? *
1 point
A. -5
B. 6
C. 11
D. -10
22. Which of the following is arranged from greatest to least? *
1 point
Captionless Image
A
B
C
D
23. What is the product of 1.43 multiplied by 10? *
1 point
A. 14.3
B. 143
C. 1430
D. 0.143
24. Which of the following is expressed in scientific notation? *
1 point
A. 0.26 x 10^3
B. 0.7 x 10^9
C. 8 x 4^10
D. 6.9 x 10^4
25. . The smallest calculator in the world was created in Switzerland. Its diameter is 0.0000012 meter. What is it in scientific notation? *
1 point
A. 1.2 x 10^6
B. 12 x 10^5
C.1.2 x 10^(-6)
D. 1.2 x 10^(-5)
26. The average distance of the planet Mercury from the sun is 5.8 x 10^7 km. What is its standard form? *
1 point
A. 58 000 000km
B. 5 800 000km
C. 0.000 000 58km
D. 0.000 058km
27. A computer can do an arithmetic operation in 0.000 000 12 seconds, how do you express it in scientific notation? *
1 point
A. 1.2 x 10^6
B. 12 x 10^7
C. 1.2 x 10^(-6)
D. 1.2 x 10^(-7)
28. As of 2006, the smallest microprocessors in common use measured 5.6 x 10^(-9)m across. What is its decimal form? *
1 point
A. 0.000 000 000 56
B. 0.000 000 005 6
C. 0.000 000 056
D. 0.000 000 00056
29. . Rita’s store made a profit of ₱2 800 on Sunday, on Monday she lost ₱700. What is the total profit? *
1 point
A. ₱1 200
B. ₱2 100
C. ₱ 3 700
D. ₱ 4 900
30. Jake walks 5/7 km to school while Joey walks 3/5 km to school. How much farther does Jake walk to school than Joey? *
1 point
Captionless Image
A
B
C
D​