ITBS Iowa Test of Basic Skills (ITBS) 6th Grade 5

Question 1

A spinner has 8 equal sections numbered 1–8. What is the probability of landing on a prime number?

Accepted Answer

1/2

Answer

Prime numbers from 1–8 are 2, 3, 5, 7 — that's 4 out of 8 sections, or 1/2.

Question 2

In which type of writing does the author primarily aim to convince the reader of a point of view?

Accepted Answer

Persuasive

Answer

Persuasive writing is designed to change or influence the reader's opinion or behavior.

Question 3

What is the main purpose of the Lewis and Clark Expedition (1804–1806)?

Accepted Answer

To explore and map the territory of the Louisiana Purchase

Answer

President Jefferson sent Lewis and Clark to explore the newly acquired Louisiana Purchase and find a route to the Pacific Ocean.

Question 4

What is the least common multiple (LCM) of 6 and 8?

Accepted Answer

24

Answer

Multiples of 6: 6, 12, 18, 24; multiples of 8: 8, 16, 24 — the LCM is 24.

Question 5

A plant placed in a dark room for two weeks would most likely show which result?

Accepted Answer

Yellowing and wilting from lack of photosynthesis

Answer

Without light, a plant cannot perform photosynthesis and will lose chlorophyll, causing yellowing and eventual death.

ITBS - Iowa Test of Basic Skills Exam Practice Test