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Computation Operations Test - 4

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Computation Operations Test - 4
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  • Question 1
    1 / -0
    How many times should 6 be added to get 66?
    Solution
    Multiplication is repeated addition.
    So, 6 times 11 = 6 x 11 = 66
    Hence, 6 should be added 11 times to get 66.
  • Question 2
    1 / -0
    If and , find the value of .
    Solution
    ... (i)
    Put the above value in the following equation.

    We get

    + 2453 = 4567

    Putting the value of the square in equation (i), we have
    + 2114 = 2453


    Answer of the final equation:

  • Question 3
    1 / -0
    Division is a process of repeated
    Solution
    Let us take an example of division.
    8 ÷ 4 = 2
    8 - 4 - 4 = 0
    Here, 4 is subtracted two times from 8.
    So, division is repeated subtraction.
  • Question 4
    1 / -0
    What will come in place of the missing number?


    Solution
    830 - 456 = 374
    So, the missing number is 4.
  • Question 5
    1 / -0

    Find the missing number that will come in the box.
    Solution
    We will do the reverse operation.
    10 + 4 = 14
    14 x 7 = 98
  • Question 6
    1 / -0
    What number should be taken away from 10000 to get the largest 4-digit number?
    Solution
    The largest 4-digit number is 9999.
    So, 1 less than 10000 is 9999.
  • Question 7
    1 / -0
    How many 1000s, 100s, 10s and 1s are needed, respectively, to get the largest 4-digit number?
    Solution
    Largest 4-digit number = 9999
    So, we need nine 1000s, nine 100s, nine 10s and nine 1s to get 9999.
    Hence, option 2 is correct.
  • Question 8
    1 / -0
    Look at the number sentence below:

    Which number will make the above number sentence true?
    Solution
    From the question, we have
    256 - 89 = 167
  • Question 9
    1 / -0
    Which sign in the box will make the given statement true?
    Solution
    We know, 12 x 9 = 108
    Hence, option 3 is the correct option.
  • Question 10
    1 / -0
    Raja runs 4 km each day. He wants to know how far he runs at the end of each week. Raja uses the following number sentence to find out the answer:


    Which of the following numbers will make the statement true?
    Solution
    We know, 4 x 7 = 28
    So, 28 will make the statement true.
  • Question 11
    1 / -0
    The sum of 3025 andis 63 hundreds. What will come in place of the box?
    Solution
    Sum is the total of two numbers.
    63 hundreds = 6300






  • Question 12
    1 / -0
    Deep saw a problem in his book:



    Which of the following number sentences matches the above problem?
    Solution
    She gave away some of his chocolates, so she is left with 19 chocolates.
    So, we will do subtraction and she already had that many chocolates that mean 28 will be the first number.
  • Question 13
    1 / -0
    ▲ x ▼ = 56, where ▲ is odd and ▼ is even. What can be the values of these two symbols?
    Solution
    According to the question,
    7 x 8 = 56 or 8 x 7 = 56
    It is given that▲ is odd and ▼ is even.
    So, 7 x 8 = 56 is correct.
    Hence, option 1 is correct.
  • Question 14
    1 / -0
    Raj and Priya scattered their 64 paper clips. They need to put them back into boxes.
    • They need to put equal number of paper clips into each box.
    • Each box cannot hold more than 8 clips.
    Which of the following number statements can be used to find out the number of boxes Raj and Priya have?
    Solution
    To find out the number of boxes, we need to divide. Hence, this is the correct option.
  • Question 15
    1 / -0
    Raj wants to plant trees in a park. He has 40 seedlings. He cannot take them all together in a sack, so he buys the following sacks.



    How many seedlings will he put into each sack, if he is going to take 1 each day and if the number of seedlings he will plant each day is to be the same?
    Solution
    There are 4 sacks.
    40 ÷ 4 = 10
    Hence, in each sack, he will put 10 seedlings.
  • Question 16
    1 / -0
    If there are 7 books in one pile of books, then how many books are there altogether?


    Solution
    There are 10 piles of book and each pile contains 7 books.
    So, 7 x 10 = 70
  • Question 17
    1 / -0
    Find the missing number in the box, if the answer to this problem is 46 and the remainder is 2.


    Solution
    Among the give options, if we divide the given number by 4, we will get a remainder of 2.


  • Question 18
    1 / -0
    The value of ♣ is 3 times smaller than the value of ♠. Find the value of ♣, if 184 - ♠ = 61.
    Solution
    The value of ♣ is 3 times smaller than the value of ♠.
    ♠ = 184 - 61 = 123
    ♣ = 123 ÷ 3 = 41
  • Question 19
    1 / -0
    Ram got an order of the following boxes of donuts:


    Which of the following number statements represents the total number of donuts?
    Solution
    There are seven donuts in each box and there are 5 boxes.
    So, 7 x 5 = 35 will be the correct number statement.
  • Question 20
    1 / -0
    If 560 - ▲= 360 and ▼ + 580 = 990, what will be the difference between ▲ and ▼?
    Solution
    ▲= 560 - 360 = 200
    ▼ = 990 - 580 = 410
    ▼ - ▲ = 210
  • Question 21
    1 / -0
    On a table there are 5232 papers stacked together. If the boss needs to put 3 in each envelope, how many envelopes does he need?
    Solution
    5232 ÷ 3 = 1744
    So, the boss needs 1744 envelopes to put all the papers in them.
  • Question 22
    1 / -0
    Radha caught many butterflies and she kept them in the jars shown below. If she put 7 butterflies in each jar, how many total butterflies did she catch?

    Solution
    There are total 13 jars.
    7 x 13 = 91
    She caught 91 butterflies.
  • Question 23
    1 / -0
    There were 546 people in a football stadium. 96 more people were watching the match from outside of the stadium. How many people were watching the match altogether?
    Solution
    546 + 96 = 642
    Total 642 people were watching the match.
  • Question 24
    1 / -0
    Rani has Rs. 589. She buys a dress for Rs. 496. How much money is left with her?
    Solution
    Rs. (589 - 496) = Rs. 93
    She has Rs. 93 left with her.
  • Question 25
    1 / -0
    Ritika placed chairs in an auditorium. If the number of chairs in each row is double the number of rows, which calculation will show the total possible number of chairs?
    Solution
    The number of chairs in each row is double the number of rows.
    The total number of chairs can be 8 x 16.
  • Question 26
    1 / -0
    The value of is 20 times smaller than the value of. Find the value of 3+, if - 61 = 19.
    Solution
    - 61 = 19
    = 19 + 61 = 80
    The value ofis 20 times smaller than the value of .
    = 80 ÷ 20 = 4
    3+= 3 x 4 + 80 = 12 + 80
    = 92
  • Question 27
    1 / -0
    Find the missing number marked by '?' in the following figure.
    Solution
    We will go forward for the first part before the missing number.
    550 ÷ 50 = 110
    110 - 10 = 100
    We will go backward for the second part.
    350 - 50 = 300
    100 x 3 = 300
    Hence, the missing number is 3.
  • Question 28
    1 / -0
    Find the value of Q ÷ P.

    Solution

    Q = 9 - 5 = 4
    There is no borrow on units digit.
    P - 8 = 4
    P = 12, i.e. 2
    P = 2, Q = 4
    Q ÷ P = 4 ÷ 2 = 2
  • Question 29
    1 / -0
    Which of the following statements is INCORRECT?

    (A) 86 - A = 40 x B, if A = 6 and B = 2.
    (B) 5 - 8 = 8 - 5
    (C) There are 96 arms in a concert. So, there are 48 people in the concert.
    (D) Raj runs 20 m each day. He runs 140 m in a week.
    Solution
    (A) is correct:
    86 - 6 = 40 x 2
    80 = 80

    (B) is incorrect:
    Multiplication is commutative but subtraction is not.

    (C) is correct:
    1 person has 2 arms, so 46 person have 46 x 2 = 92 arms.

    (D) is also correct:
    A week = 7 days
    20 m x 7 = 140 m

    Only (B) is incorrect. So, option 2 is correct.
  • Question 30
    1 / -0
    Find the 4-digit number.


    Solution
    The required number is an odd number.
    Tens digit = Hundreds digit of (550 ÷ 5) or 110 = 1
    The hundreds digit is a number that has no value = 0.
    Thousands digit = Tens digit of (110 x 3) or 330 = 3
    So, the required number is 3015.
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