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Computation Operations Test - 5

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Computation Operations Test - 5
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Weekly Quiz Competition
  • Question 1
    1 / -0
    How many times should Joban subtract 7 from 70 to reach 21?
    Solution
    70 - 21 = 49
    Joban needs to subtract 49 from 70 to reach 21.
    So, 49 = 7 x 7 = 7 times 7
    Johan needs to subtract seven times 7 from 70 to reach 21.
  • Question 2
    1 / -0
    If and , then
    Solution
    ... (i)

    ... (ii)

    Putting the value of (star + square) in equation (ii) from equation (i), we get
    4880 + = 6320
    = 6320 - 4880 = 1440

    Put the value of square in equation (i).
    + 1440 = 4880
    = 3440
    Now,

  • Question 3
    1 / -0
    Reena wants to multiply 9 and 13. She will _______ 9 thirteen times.
    Solution
    9 times 13 = 9 + 9 + 9 +9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9
    So, she add 9 thirteen times
  • Question 4
    1 / -0
    Mr. Jatin wrote an incomplete addition on the black board. What number should Ravi write to make it correct?


    Solution


    8 + 7 = 15
  • Question 5
    1 / -0
    What is the value of the missing number?

    Solution
    Using inverse operation,
    63 ÷ 7 = 9
    9 - 6 = 3
  • Question 6
    1 / -0
    Suresh thinks of the smallest 5-digit number. Which of the following should he do to make it the largest 4-digit number?
    Solution
    Smallest 5-digit number = 10,000
    Taking away 1,
    10,000 - 1 = 9,999 (Largest 4-digit number)
  • Question 7
    1 / -0
    In level 1, Ajit scored 4568 points. In level 2, Ajit scored some more points. On adding the points of level 1 and level 2, he got the largest 4-digit number. How many 1000s, 100s, 10s and 1s are there in the points he scored in level 2?
    Solution
    4568 + ? = Largest 4-digit number
    4568 + ? = 9999
    ? = 9999 - 4568 = 5431
    So, there are 5 thousands, 4 hundreds, 3 tens and 1 ones.
  • Question 8
    1 / -0
    Which number should be written in place of the shape to make the following number sentence correct?


    Solution

    = 141 - 69 = 72


  • Question 9
    1 / -0
    Jatin forgets to put the sign in the number sentence. Which sign should he put to make the sentence true?


    Solution
    Using the operation,
    9 x 9 = 81
    81 ÷ 9 = 9
  • Question 10
    1 / -0
    Raghav has 6 boxes of pencils. He has 54 pencils in all the boxes altogether. His sister forms a number sentence to find out how many pencils are there in each box, if every box has the same number of pencils.

    6 x = 54

    What number can go in the circle to complete the number sentence made by the sister of Raghav?
    Solution
    6 x = 54
    =
  • Question 11
    1 / -0
    What number shall replace the shape to get the result as 8474?

    521 tens +
    Solution
    521 tens means 5210.
    5210 + = 8474
    = 8474 - 5210 = 3264
  • Question 12
    1 / -0
    Manpreet wrote the following problem on a card.



    How can she write the same problem in the form of a number sentence?
    Solution
    (Maria + Toby) ate = 22 chocolate
    Toby ate = 16 chocolate

    16 + = 22
    = 22 - 16 = 6
    So, Maria ate 6 chocolate.

  • Question 13
    1 / -0
    As per the given information, we know that both triangle and circle are even.



    Which of the following will NOT satisfy the values of traingle and circle?
    Solution
    Both 63 and 7 are odd. Hence, this cannot be the values of triangle and circle.
  • Question 14
    1 / -0
    Mr. Vijay teaches a class, which has 42 students, and promises to distribute erasers for free. Every student needs 1 eraser. The shopkeeper asks Mr. Vijay the number of boxes of erasers he needs. If in one box there are 6 erasers, which of the following calculations will Mr. Vijay do to find out the number of boxes he needs?
    Solution
    Total number of students = 42
    Number of erasers in one box = 6
    Number of boxes needed = 42 ÷ 6
  • Question 15
    1 / -0
    There are 45 balls in all the baskets shown below. What will be the number of balls in each basket, if every basket has the same number of balls?


    Solution
    There are 5 baskets. So, 45 ÷ 5 = 9
    Each basket will have 9 balls.
  • Question 16
    1 / -0
    If there are 8 rupees in each bag, then how much money is there in all the bags?


    Solution
    There are 3 bags and each contains Rs. 8.
    So, total money = 8 x 3 = Rs. 24
  • Question 17
    1 / -0
    Find the missing number in the box if there is no remainder.

    Solution


    So, the answer is 12.
  • Question 18
    1 / -0
    The value of * is 3 times the value of #. What is the value of *, if # + 16 = 25?
    Solution
    # + 16 = 25
    # = 25 - 16
    # = 9
    Now, * = 3#
    Hence, * = 3 x 9 = 27
  • Question 19
    1 / -0


    Which of the following number sentences represents the given number of triangles?
    Solution
    There are 2 triangles each in 5 squares.
    So, 2 x 5 = 10 is the correct number sentence.
  • Question 20
    1 / -0
    If ♣ + 300 = 500 and ♦ + 720 = 1200, find the value of ♦ - ♣.
    Solution
    ♣ + 300 = 500
    ♣ = 500 - 300 = 200
    ♦ + 720 = 1200
    ♦ = 1200 - 720
    ♦ = 480
    ♦ - ♣ = 480 - 200 = 280


  • Question 21
    1 / -0
    There are 6064 sandwiches in a shop. Sandwiches are packed in pairs of two. How many pairs of sandwiches are there in total?


    Solution
    There would be pairs of sandwiches.
    So, there are 3032 pairs of sandwiches.
  • Question 22
    1 / -0
    Ria put 6 cookies in each of these lunch boxes. How many cookies are there in all the boxes?


    Solution
    There are 10 lunch boxes and 6 cookies in each of them.
    So, there are 10 x 6 = 60 cookies in total.
  • Question 23
    1 / -0
    Zoya puts 237 cupcakes in the kitchen. Her mother puts 345 more cupcakes in the kitchen. How many cupcakes are there in the kitchen altogether?
    Solution
    There are 237 + 345 = 582 cupcakes in the kitchen.
  • Question 24
    1 / -0
    Rahul has 233 blue marbles and 364 black marbles. How many less blue marbles than black marbles does he have?
    Solution
    Number of blue marbles = 233
    Number of black marbles = 364
    364 - 233 = 131
    So, the answer is 131 marbles.
  • Question 25
    1 / -0
    Some students stand in rows for the assembly. If the number of rows and the number of students in each row are the same, then which of the following can be the total number of students?
    Solution
    The number of rows and the number of students in each row are the same
    So, the answer is 15 x 15.
  • Question 26
    1 / -0
    The value of @ is 5 times the value of ♣. What is the value of @, if ♣ + 20 = 135?
    Solution
    ♣ + 20 = 135
    ♣ = 135 - 20
    ♣ = 115
    Given: @ = 5♣
    @ = 5 x 115
    @ = 575



  • Question 27
    1 / -0
    What is the missing number in the box?


    Solution
    + 6 x 2 - 8 + 42 = 326
    + 12 - 8 + 42 = 326
    + 46 = 326
    = 326 - 46 = 280
  • Question 28
    1 / -0
    Find the value of (x - y).


    Solution
    Here,
    5 + 2 = x
    x = 7
    and
    6 + y = 9
    y = 3
    So, x - y = 7 - 3 = 4

  • Question 29
    1 / -0
    Which of the following statements is correct?
    Solution
    6 x 6 = 36
    4 x 9 = 36
    So, both 6 x 6 and 4 x 9 are equal.
    Therefore, option 1 is correct.
  • Question 30
    1 / -0
    Find the 4-digit number.


    Solution
    The correct answer is 7812.
    It is an even number.
    Its thousands digit is 7, which is bigger than 5 but smaller than 9.
    Its tens digit is 1, which is neither prime nor composite.
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