Perfect Squares
What is 15²?
225
Between which two consecutive whole numbers does √50 lie?
7 & 8
Is 7 rational or irrational?
Rational
Compare using <, >, or =: √16 ___ 5
< (4 < 5)
How many continents are there?
7
What is √196?
14
Is √30 closer to 5 or 6? Explain.
5, because 30 is only 5 away from 25 but 6 away from 36.
Classify √25 as rational or irrational.
rational
Which is greater: √10 or 3?
√10 (≈ 3.16)
Who invented the light bulb?
Thomas edison
What are both square roots of 121?
11 & -11
Estimate √40
Between 6 and 7
Is 0.333… rational or irrational? Explain.
Rational. It's a repeating decimal equal to 1/3.
Compare using <, >, or =: π ___ 22/7
< (π ≈ 3.1416, 22/7 ≈ 3.1429)
What do you call an angle that's greater than 90 but less than 180 degrees?
obtuse
A square pool has an area of 289. What is the measure of one of it's sides?
17
Estimate √77
Between 8 and 9
Name every set of numbers that −8 belongs to.
rational, integer
Order from least to greatest: √5, 2.3, 9/4, −√3
−√3, √5, 9/4, 2.3 (≈ −1.73, 2.24, 2.25, 2.3)
What is the hardest natural substance on earth?
diamond
A square garden has an area of 144 square feet. What is it's perimeter?
48 ft
A square courtyard has an area of 130 square feet. Estimate the side length
Between 11 & 12 ft
Give an example of a real number that is not rational and explain how you know.
answers vary
Order from least to greatest: √50, 7, 7.1, 50/7
7, √50, 7.1, 50/7 (≈ 7, 7.07, 7.1, 7.14)
Which 4 presidents are on Mount Rushmore?