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Grade 9 Unit 1 Test
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Eujin Aljama
Name:___________________________
Multiple Choice: Select the best answer for the following questions:
c
1.
b
2
1.
.
b 3.
1.
.
c
4.
1.
.
b
5.
1.
.
b
6.
1.
.
b
7.
1.
.
a
8.
1.
.
b
9.
1.
.
a
10
.
.
b
11
.
.
c
12
.
.
Short Answer:
13. Evaluate the expression [1]
)( - 3 ) = - 27
( - 3 ) (- 3
5 5
125
5
14. Mr. Salavati bought a stock for $2000. Each month for the first 4 months, the stock retained
92% of its value. What was the stock worth after 4 months? Round to the nearest cent, if
necessary. [2]
the stock worth after 4 month: $1432.79
15. Evaluate the expression
[1]
2 3
5(-13 ) - 2(-1 2 )2
3
= 5(- 125 ) - 2( 25 )
27
9
= - 625 + 50 = - 625 - 150 = - 775 = -28 19
27
27
27
9
27
27
16. Which has the greatest value? [1]
3
- -4
5
[ ]
17. Madison has $800 in an account that earns 0.25% monthly interest. If Madison does not make
any deposits or withdrawals, how much money will she have after 1 year? Use the formula
A= P(1+i)n and round to the nearest cent. [2]
She will have $824.33 after 1 year
18. Evaluate -3(-5) – (-24)
[1]
-2 4
( ) = -16
-3(-5) = 15
15 - (-16) = 15 + 16 = 31
A. 31
19. Brian calculated 6(–4) – 4(–4) in the following way.
6(–4) – 4(–4)
= 2(–4)
= –8
Is Brian’s calculation correct? Explain why or why not. [2]
Brian’s calculation is correct
because I multiplied 6(–4) = –24 and 4(–4) = –16. Then I subtracted
–24 – (–16) = –24 + 16 = –8.
20. Explain the steps needed to evaluate the following expression. Then evaluate. [2]
first step: (-9 + 3) = -6
2
second step: -6 = 36
third step: -3 x 36 = -108
2
forth step: 2 = 4
fifth step: 4 - (-2) = 4 + 2 = 6
sixth step: -108 = -18
6
( )
-108 = -18
A._________
6
21. Explain your steps in evaluating the following expression when x = –6 and y = –2.
Then evaluate. [2]
first step: 5(-4) - 2(-216) + 4(-2)
second step: -20 - (-432) + (-8)
third step: -20 + 432 + -8 = 404
A._____
404
22. Name three fractions between
. Explain how you found your fractions. [3]
9 17 21
20 , 40 , 50
explain: 1 made the denominmeters equal value
23. Explain the difference between integers, whole numbers, natural numbers, and integers [4]
integers: Integers are whole numbers or its opposites
whole number: Whole numbers are the set of numbers 0, 1, 2, 3, 4, and ect
natural numbers: Natural numbers are the same as whole numbers except that 0 is
not included in the set of number
24. What is difference of
34 + 41
15
9
= 170 + 123 = 293 = 6 23
45
45
45
45
? [2]