Mental Math Task 1

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About This Quiz

Mental Math Task 1 challenges learners with arithmetic problems including number sequences, time calculations, basic geometry, and cost analysis, suitable for enhancing quick math skills.

Mental Math Task 1 - Quiz

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  • 2. 

    The side of a regular pentagon is 3 cm. What is the perimeter?

    • 10 cm

    • 20 cm

    • 15 cm

    Correct Answer
    A. 15 cm
    Explanation
    A regular pentagon has all sides equal in length. In this case, each side is given as 3 cm. To find the perimeter, we need to add up the lengths of all the sides. Since there are 5 sides, we multiply the length of one side (3 cm) by 5. Therefore, the perimeter of the regular pentagon is 15 cm.

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  • 3. 

    1- ___ = 0.8

    Correct Answer
    0.2, 0. 2, 0 .2
    Explanation
    The correct answer is 0.2, 0. 2, 0 .2.

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  • 4. 
    Which one do you like? - ProProfs

    Which one do you like?

    • 8

    • 16

    • 32

    Correct Answer
    A. 16
  • 5. 

    A train journey takes 3 hours. If I arrive at 1:30 pm, at what time did I leave?

    • 11:30 am

    • 10:30 am

    • 4:30 pm

    Correct Answer
    A. 10:30 am
    Explanation
    If the train journey takes 3 hours and the person arrives at 1:30 pm, then they must have left 3 hours before that time. Subtracting 3 hours from 1:30 pm gives us 10:30 am, which is the time they left.

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  • 6. 
    Which part of the circle is highlighted in the circle below - ProProfs

    Which part of the circle is highlighted in the circle below

    • Diameter

    • Radius

    • Centre

    Correct Answer
    A. Diameter
    Explanation
    The highlighted part in the circle is the diameter. The diameter is a line segment that passes through the center of the circle and connects two points on the circumference. It is the longest chord in a circle and divides it into two equal halves.

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  • 7. 

    What are the chances of rolling a 3 on a 6 sided dice?

    • Unlikely

    • Likely

    • Even chance

    • Certain

    Correct Answer
    A. Unlikely
    Explanation
    The chances of rolling a 3 on a 6-sided dice are unlikely because there is only one face with a 3, out of a total of six possible outcomes. This means that the probability of rolling a 3 is 1 out of 6, or approximately 16.67%. Therefore, it is less likely to roll a 3 compared to rolling any other number on the dice.

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  • 8. 

    A pen costs $ 4.60. How much will 2 pen cost?

    Correct Answer
    $9.2, 9.2, $ 9.2
    Explanation
    The cost of one pen is $4.60. To find the cost of 2 pens, we multiply the cost of one pen by 2. Therefore, 2 pens will cost $9.20.

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  • 9. 

    What are the next two numbers in sequence? 3, 6, 10, 15, 21, ____, _____

    Correct Answer
    28 36
    Explanation
    The sequence follows a pattern where each number is the sum of the previous number and the position of that number in the sequence. For example, 6 is the sum of 3 and 2 (the position of 6 in the sequence). Similarly, 10 is the sum of 6 and 3. Following this pattern, the next number should be the sum of 10 and 4 (the position of the next number), which is 14. Continuing this pattern, the next number should be the sum of 15 and 5, which is 20. However, the given answer does not follow this pattern and does not provide a clear explanation for the next two numbers in the sequence.

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  • Current Version
  • Mar 05, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Jun 24, 2020
    Quiz Created by
    Anam
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