Simplify
What is √4 + √9
5 because √4 = 2 and √9 = 3, then add 2 + 3
True or False: 0.121212... is rational
True because it's repeating.
Find: √100
10
because 10 x 10 =100
True or False: -5 is rational
True
What 2 integers is √40 in between?
6 and 7
√40 is between √36 and √49, which are 6 and 7
What is 2√16 ?
8 because √16 = 4, then multiply by 2
True or False: 0.12 is irrational
False.
It ends so it's rational.
Find: √64.
8
because 8 x 8 = 64
True or False: √5 is rational
False
Estimate √90.
Approximately 8.5
√90 is about halfway between √81 and √100
so √90 is about halfway between 9 and 10
What is √(30 + 6) ?
It is 6 because add first to get 36, then take the square root.
True or False: 0.345297132... is rational
False because it does not repeat or end.
Find: ∛64.
4
because 4 x 4 x 4 = 64
True or False: Pi is irrational
True= Pi is always irrational
Which number has a square root between 4 and 5?
A. 4.5 B. 9 C. 20 D. 27
C. 20
because √20 is between √16 and √25
True or False: -4.54 is irrational
False. It is rational because it ends
Find: ∛8.
2
because 2 x 2 x 2 = 8
True or False: √25 is irrational
False, because it's 5
Estimate √15.
Approximately 3.8 or 3.9
because √15 is between √9 and √16 but much closer to √16 or 4.
True or False: √10 is irrational.
True.
Estimate ∛10.
It is between ∛8 and ∛27, which are 2 and 3.
So approximately 2.2 because 10 is closer to 8.