Math 8
Quiz 1.3-1.5 REVIEW
Name ________________________
Date: _____________
Block: ____
1. Order the following numbers from least to greatest:
26
a) −13.1
−√169
13% 1.3 x 10-2
b) 1.5 x 104
2
15
1.5
5.1 x 10-3
150%
16
3
2. Find each square root, if possible. Round to the nearest tenth. If the number under the square root is a
perfect square, write “perfect square” on the second line. If it is not, leave the second line blank.
1.
4.
√81 = _________
2. √12 = _________
3. ±√4 = _________
________________
_________________
__________________
√−100 = ________
5. −√36 = __________
__________________
___________________
6. ±√23 = _________
__________________
Find two consecutive whole numbers between which each square root lies. Then round to the nearest one.
Example:
√36 < √38 < √49 The two nearest perfect squares are 36 and 49
6
7__
Think! Since 38 is closer to 36 than 49, √38 is approximately equal to 6.
Answer: √38 ≈ 6
3. ______ √19 _______
______
_______
Answer:______________
4. ________ −√103 ________
________
________
Answer:__________________
Explain why 225 is a perfect square. ______________________________________________
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

Is every natural number a rational number?___________________________________________________
Is every rational number a natural number?___________________________________________________
Always, sometimes, or never true?
1. A whole number is an integer. __________________
2. A decimal number is an irrational number.____________
3. An irrational number is a negative integer._______________
4. An integer is a whole number.__________________
5. A repeating decimal is a real number._______________
6. A natural number is an integer._________________
7. An integer is a whole number._________________
8 A negative integer is a natural number.______________
Explain the difference between
a) Natural numbers and Integers.
_________________________________________________________________________________________________
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b) Whole numbers and Rational numbers.
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