Exponents, Radicals, & Scientific Notation

Scientific Notation

7. The number 0.000 000 000 087 3 is equivalent to which of the following expressions?

2015 December(72E) Math Question 7

2013 December(71E) Math Question 8

2010 December(69A) Math Question 14

17. A certain computer performs 1.5 x 10^8 calculations per second. How many seconds would it take this computer to perform 6.0 x 10^16 calculations?

2015 April(73G) Math Question 17

18. In scientific notation, 670,000,000 + 700,000,000 = ?

2014 June(72C) Math Question 18

2012 April(70G) Math Question 22

2017 April(74F) Math Question 25

2019 December(C03) Math Question 28

2018 December(B05) Math Question 30

30. In a certain country, last year's population was estimated to be 3.6 x 10^6 people, and last year's public debt was estimated to be 1.8 x 10^9 dollars. Based on these estimates, what was last year's public debt per person in this country?

2014 December(72G) Math Question 30

32. When written in scientific notation, which of the following expressions is equal to the number of blocks used to construct the pyramid?

2016 December(74H) Math Question 32

2012 December(71A) Math Question 32

38. The value of x5(0.5×2+ 2.5x + 6) is between which of the following numbers when x T 10 ?

2018 April(A09) Math Question 38

39. When written in scientific notation, the number of rivets used to build the Eiffel Tower is equal to which of the following expressions?

2018 June(A11) Math Question 39

39. The population of American robins in 2015 is equal to 3.2 × 10k for some integer k. What is the value of k ?

Laws of exponents

2020 December(D03) Math Question 39

A couple is deciding between 2 condos to purchase. Some information about each condo is given below. The couple assumes that the market value of either condo will increase exponentially at a rate of 4% per year.

2021 June(D06) Math Question 41

48. Which of the following values is closest to the number of miles between Stars A and D ?

Scientific NotationExponents, Radicals, & Scientific NotationACT math questions

2015 December(72E) Math Question 7

2013 December(71E) Math Question 8