1.1 Classifying Real Numbers
True or False: Natural Numbers, Whole Numbers, Integers, Rational Numbers, and Irrational Numbers are all real numbers.
True
True or False: √121 a perfect square; the square root equals 12.
False
Which number is larger: √45 or 7?
7.
True or False: In scientific notation, the FIRST number must always be between 1 and 10.
True.
Is 63/9 a Natural Number, Whole Number, Integer, Rational Number, or Irrational Number.
Natural Number
Integer
Estimate √20 to the nearest tenth.
4.5
Fill in the blank:
-3.5, -2, ____, 1.9, 4
Options: 0, 3, √2, 0.5
√2
True or False: 2.35 x 10^4 = 23,500
True.
Give me an example of an irrational number.
Ms. Lopez will determine if the answer is right or not.
Is √132 rational or irrational?
Irrational.
Between which two whole numbers does √7 fall between?
2 and 3
Which number is smaller: √36 or 24/8
24/8
Write the number that is equivalent to 6.9 x 10^-3.
0.0069
Give me an example of a non-perfect square between the whole numbers 4 and 5. (Hint: √19 is between 4 and 5. Now find another example)
√17 √22
√18 √23
√20 √24
√21
True or False: All integers are whole numbers.
False... whole numbers DO NOT include negatives.
(All whole numbers are integers)
Between which two consecutive whole numbers does √50 fall between?
7 and 8
Order from greatest to least:
2√52, 7.1, 6.3, 6.95
2√52, 7.1, 6.95, 6.3
True or False: 24.8 x 10^2 is a valid scientific notation form.
False.
True or False: An irrational number is not a real number.
False.
What should 2√9 be classified as? (Remember we classify numbers in the smallest subset)
Natural
A square has an area of 50in. About how long is one side? (round to the nearest tenth)
7.1in
Order from smallest to largest:
√49, 25/5, 7.3, 5.3
25/5, 5.3, 7, 7.3
A star is 3.9 million km away. Write this in scientific notation.
3,900,000 = 3.9 million, so 3.9 x 10^6 is the answer
If the side of a square is 12.3cm, what is the approximate area?
151.29 cm