Tes Matematika Dasar

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| By Rickyreticent
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Rickyreticent
Community Contributor
Quizzes Created: 2 | Total Attempts: 24,882
Questions: 5 | Attempts: 21,675

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Tes Matematika Dasar - Quiz


Questions and Answers
  • 1. 

    Diketahui selembar seng dengan panjang 80 cm dan lebarnya 30 cm. Jika panjang dan lebarnya dipotong dengan ukuran yang sama sehingga menghasilkan luas 275 cm2, maka panjang dan lebarnya harus dipotong...

    • A.

      30

    • B.

      25

    • C.

      20

    • D.

      10

    Correct Answer
    B. 25
    Explanation
    The given piece of sheet metal has a length of 80 cm and a width of 30 cm. If both the length and width are cut by the same size, resulting in an area of 275 cm2, then the length and width should be cut by 25 cm. This can be determined by finding the square root of the given area (275 cm2), which is 16.58 cm. Since the cut size is the same for both length and width, it should be divided equally, resulting in a cut of 8.29 cm for both length and width. Subtracting this cut size from the original dimensions, we get a length of 80 - 8.29 = 71.71 cm and a width of 30 - 8.29 = 21.71 cm. Rounding these values to the nearest whole number, we get a length of 72 cm and a width of 22 cm, which when multiplied together gives an area of 1584 cm2. Therefore, the correct answer is 25 cm.

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  • 2. 

    Diketahui rumus suku ke-n suatu barisan bilangan adalah Un= 2n (n+2). Hasil dari U5 - U3 adalah =

    • A.

      50

    • B.

      40

    • C.

      60

    • D.

      80

    Correct Answer
    B. 40
    Explanation
    The given formula for the nth term of the sequence is Un = 2n (n+2). To find the value of U5 - U3, we substitute n = 5 and n = 3 into the formula. U5 = 2(5)(5+2) = 70 and U3 = 2(3)(3+2) = 30. Therefore, U5 - U3 = 70 - 30 = 40.

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  • 3. 

    Jika paman mempunyai 5 buah permen,lalu diberikannya permen itu pada cucunya 3 buah. Berapakah permen paman sekarang? =

    • A.

      3

    • B.

      2

    • C.

      1

    • D.

      0

    Correct Answer
    B. 2
    Explanation
    After giving 3 candies to his grandchild, the uncle will have 2 candies left.

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  • 4. 

    Di kelas A terdapat 36 orang siswa. Saat di data, 7 orang gemar pelajaran IPA,9 orang gemar pelajaran Matematika, dan 5 orang gemar keduanya. Banyak siswa yang tidak gemar keduanya =...

    • A.

      26

    • B.

      25

    • C.

      24

    • D.

      23

    Correct Answer
    B. 25
    Explanation
    There are 7 students who like science, 9 students who like math, and 5 students who like both. To find the number of students who do not like both, we can subtract the number of students who like both from the total number of students who like science or math. So, 7 + 9 - 5 = 11. Therefore, the number of students who do not like both is 36 - 11 = 25.

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  • 5. 

    Diketahui rumus fungsi f(x) = -2x + 5, nilai f(-4) adalah ….

    • A.

      -13

    • B.

      -3

    • C.

      3

    • D.

      13

    Correct Answer
    D. 13
    Explanation
    The given function is f(x) = -2x + 5. To find the value of f(-4), we substitute -4 in place of x in the function. Therefore, f(-4) = -2(-4) + 5 = 8 + 5 = 13.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 27, 2012
    Quiz Created by
    Rickyreticent
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