soal mat 7

A. Choose the right answer for each of the following problems
1. The result of (-2 x 4) – (-5) is ………
a. – 13 c. 8
b. – 3 d. 13

2. The sum of two integers is 11. If the first integer is 16, the other one is …..
a. 4 c. – 5
b. 5 d. – 6

3. The order of -6, 0, 2, 1, -3, -1, 3 an 4 from the biggest to the smallest is ….
a. -3, -2, 0, 1, 2, 3, 4, -6 c. -6, 4, 3, -3, 2, 1, -1, 0
b. -6, -3, -1, 0, 1, 2, 3, 4 d. 4, 3, 2, 1, 0, -1, -3, -6

4. The result of [-2 + (-3)] x 4 is …..
a. 24 c. -4
b. 20 d. -20

5. The result of [-3 + (-6)] x (-2) is …..
a. 9 c. -9
b. 18 d. -36

6. If a = -2 and b = 3, the result of
(2b – a) + (a x b) is ………
a. 2 c. 10
b. – 4 d. -6

7. Yesterday, the temperature of Puncak was 15oC. Today, the temperature is 14oC cooler. So, the temperature of Puncak today is ….

a. 19oC
b. 11oC
c. -4oC
d. 12oC


8. The Result of 3 + 4 x 2 – 6 is ….
a. -28 c. 8
b. -13 d. 5

9. The result of 2 x 3 + 5 is …..
a. 16 c. 17
b. 32 d. 11

10. There are 9 classes in a Junior High School. Each class consists of 38 students. The school received a government’s aid of Rp. 4.275.000,00. that amount of money will be given to all students in the school at the same portion. How much each student will get the money ?
a. Rp. 13.000.000 c. Rp. 12.250.000
b. Rp. 12.500.000 d. Rp. 12.000.000

11. Let. 3*2 has the same meaning with 3 + 2 x 3 – 2
The value of 4*7 and 5*2 is …..
a. 37 and 33 c. 25 and 13
b. – 33 and 21 d. – 33 and 33

12. Let we have 4 statements as follows.
(1) 5 – 6 = 20 - 21
(2) 19 – 22 > -6 - 9
(3) 0 < 4 + 5 – 4 x 3
(4) 4 : 2 – 3 = 4 : 3 – 2
choose the following correct statements.
a. Statement (1) and (3)
b. Statement (2) and (4)
c. Statement (1) and (2)
d. Statement (3) and (4)
13.
a. c.
b. d.

14. Mia has asked by her older brother to buy 10 pencils Unfortunately, she enough money. She needs Rp. 2.000,00 more to buy the pencils. So Mia only buys 8 pencil and gets Rp. 1.000,00 back. How is the price of four pencils ?
a. Rp. 1.500.000 c. Rp. 6.000.000
b. Rp. 13.000.000 d. Rp. 2.000.000

15. The value of 23 – 32 x 23 is …….
a. c. -82
b. d. (-8)2

16. The value of is ……
a. 25 + 3 c. 52 + 32
b. 2 x 5 + 2 d. 25 + 32

17. If 2x = 64, the value of x2 + 2x is …..
a. 35 c. 24
b. 48 d. 21

18. The most simple form of 33 x (2o x 34)2 : (25) is ……
a. 311 x 233 c. 311 x 23
b. 311 : 233 d. 311 : 23

19.
a. 72 c. 32
b. 63 d. 24

20. The value of is …….
a. 325 c. 625
b. 425 d. 725


B. Do the following exercise correctly
1. In the school holiday, the students of SMP Berdikari have a vacation on the beach. They use 8 busses. Each bus contain 45 students. They have the same charge for their vacation. The total amount of collected money is Rp. 580.000,00. How much money should each student pay for the vacation ?

2. Complete the following temperature table.

Initial Temperature Temperature’s Changes Last Temerature
3oC
4oC
-5oC
-9oC
0oC
10oC
8oC
-3oC
0oC
12oC
Increase 2oC
Increase 9oC
Increase 3oC
decrease 5oC
decrease 5oC
….
Increase 2oC
….
….
decrease 5oC
5oC
….
….
….
….
5oC
….
-8oC
0oC
….





Read the following paragraph to answer the questions number 3, 4, and 5.







3. Determine the change of the ice cream temperatures in 8 minutes.
4. How long time (in minute) does the temperature of the ice cream reach 0oC ?
5. Determine the temperature of the ice cream when it is ignored in 7 minutes.




INTEGERS
PAPER 1


1.

Based on the number line, P + Q =
a. -7 c. -20
b. -14 d. -21

2. Subtract -6 from 8.
a. -14 c. 2
b. -2 d. 14

3.

Which of the following are the values of K and L ?
a. K=-9, L= 6 c. K=-6, L= 6
b. K=-9, L= 9 d. K=-9, L= 9

4. The emperature of a hill resort is 2oC in the morning. By noon, the temperature rises by 6oC. However, the temperature drops 10oC when night falls. Whick of the following sows the cange in temperature correctly?















5. -32, -31, -29, -26, x, -17, -11
The value of x in the above number sequence is
a. -24 c. -22
b. -23 d. -21

6. Nordin’s scores in a game are -5, -3, -4, and 9. while Hisham’s scores are -2, -5, -6, 8 and 1. Find the difference between their total scores.
a. 1 c. 3
b. 2 d. 4

7. -11 + 4 – (-13) =
a. -20 c. 6
b. -6 d. 20

8. -23-(7-18) =
a. -48 c. -12
b. -34 d. 12

9. 20 + (-35) -47 =
a. 32 c. -62
b. -32 d. -102

10.
The sum of numbers in each in the above table are the same. The value of n is …
a. -5 c. 3
b. -3 d. 5


PAPER 2


1. Find the value of - 16 - (-19).
Answer :

2. Evaluate –(3 – 5) + (-8)
Answer :

3. Find the value -31 + (-17 – 9).
4. The temperature of a freezer dropped by 3oC from -4oC. After the power is switched off, the temperature rose by 13oC. calculate the final temperature of the freezer.
Answer :
5. Evaluate – 18 – ( - 6 + 15)
Answer:
6. 32, 20, 8, M, -16, N
Find the value of M and N in the above number sequence.
Answer :
7. Find the value of 24 + (-18) –(-13).
Answer :
8. Evaluate (-7-5) – (4-11).
Answer:
9. A helicopter is 763 m above sea level while a submarine which is vertically below it is 456 m below sea level. Find the vertical distance between the helicopter and the submarine.
Answer:
10. Amran goes into a lift at the 12th floor. The lift descends 5 floors before descending to 3rd floor. The operations below shows Amran’s journey in the lift. Find the values of m and n.
12 + m + 5 + n = 3
Answer:






I. For each problem numbered 1 to 25, choose the right answer!
1. The result or -3 + 4 - (-2) is …..
a. -4 c. 3
b. -3 d. 4

2. Given the following inequalities :
(i) -2 < 4, (iii) 12 < -15
(ii) -6 > -9
The inequality which is true is …..
a. only (i) and (ii) c. only (ii) and (iii)
b. only (i) and (iii) d. (i), (ii), and (iii)

3. [5 + (-8) - (-2)] - [-3 + 6 + (-2)] = …..
a. -5 c. -1
b. -2 d. 0

4. 8 x {-17 + [(14 - 16) x (-4)]} = …..
a. -200 c. 72
b. -72 d. 200

5. The result of (-4)3 + 23 is …..
a. -56 c. -70
b. -58 d. -72

6. (-3)2 - 4 x (-5) x (-2) = …..
a. -31 c. 25
b. 58 d. 49

7. The result of (22 x 32)2 is …..
a. 48 c. 729
b. 96 d. 1,296

8. The value of n that satisfies the expression 2n = 43 is …..
a. 2 c. 5
b. 3 d. 6

9. The estimated value of is …..
a. 3,4 c. 3,7
b. 3,5 d. 3,8

10. The result of + is …..
a. 0,009 c. 0,9
b. 0,09 d. 9

11. Given the value of p2 = 8 and q3 = 10.
The value of + is …..
a. p + q c. 10p + q
b. p – q d. 10p – q

12. The result of 51 x 149 rounded to the nearest ten is …..
a. 6,000 c. 7,000
b. 6,500 d. 7,500

13. The following fractions are equivalent with , except …..
a. c.
b. d.
14. Given the following statements:
(i) < (iii) <
(ii) < (iv) <
The true statements are …..
a. only (i) and (ii) c. only (ii) and (iii)
b. only (i) and (iv) d. only (ii) and (iv)

15. The decimal form is ….
a. 0,025 c. 0,25
b. 0,175 d. 1,75

16. The simples fraction form of 0,085 is …..
a. c.
b. d.

17. The value 5 – 1 of is …..
a. 2 c. 4
b. 4 d. 8

18. The value of 1 – + is …..
a. 1 c. 1
b. 1 d. 2

19. The result of 2 x : 1 is …..
a. 2 c.
b. 1 d.

20. The simplest form of (-1 )6 : (-1 )3 is …..
a. (1 )9 c. (-1 )9
b. (1 )3 d. (-1 )3

21. 16 % is expressed in the fraction form as …..
a. c.
b. d.
22. A class consists of 22 female students and 18 male student. The percentage of male students in the class is …..
a. 36% c. 55%
b. 45% d. 625%

23. The per mille form of is …..
a. 12,5% c. 125%
b. 62,5% d. 625%

24. If 12.9974 is rounded to two decimal places, the result is …..
a. 12.10 c. 13.00
b. 12.99 d. 13.10

25. The standard form of 0,0038247 rounded to two decimal places is …..
a. 3.82 x 10-2 c. 3.83 x 10-2
b. 3.82 x 10-3 d. 3.83 x 10-3


II. Do the following problems in detail!
1. Do the following calculations :
a. 15 + (-8) - (-25)
b. 9 x (-3) x (-4)
c. [40 : (-2)] : 5

2. Do the following calculations :
a. (-3)2 + (-4)3 - 62
b. (-5)2 - 32 + 43
c. 82 - (-3)3 + 92

3. Find the value of n where is integer!
a. n2 = 16 d. 2n = 43
b. n3 = 64 e. 9n = 38
c. n4 = 81 f. 53 x 25 = 5n

4. Do the following calculations :
a. ( + 2 ) x (1 - )
b. ( : 2 ) x (1 - )
c. ( : 2 ) x ( - 5 )

5. The number of population of the city. A in 2005 is 1,800,000. If every year the population is increased by 4%, then what is the population of the city A in the year:
d. 2006,
e. 2007.