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Knowing Our Numbers Test - 10

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Knowing Our Numbers Test - 10
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Weekly Quiz Competition
  • Question 1
    1 / -0
    What is answer of (3020 + 3697) estimated to the nearest hundred?
    Solution
    We have ,
    3020 + 3697 = 6717
    Rounding off 6717 to the nearest hundred, we get 6800.
  • Question 2
    1 / -0
    Find the product of place values of two sevens in 2057874?
    Solution
    Required answer = 7000 x 70 = 490000
  • Question 3
    1 / -0
    What is 953164 in expanded form?
    Solution
    The number is Nine lakh fifty three thousand one hundred and sixty four.

    So, 953164 = 900000 + 50000 + 3000 + 100 + 60 + 4
  • Question 4
    1 / -0
    When a roman numeral of smaller value is put after a larger or equal value, it is _____.
    Solution
    When a roman numeral of smaller value is put after a larger or equal value, it is added.
  • Question 5
    1 / -0
    What is the sum of largest 5-digit number and the smallest 7-digit number?
    Solution
    Largest 5 digit number is = 99,999
    Smallest 7 digit number is = 1,000,000
    So, sum is = 1,000,000 + 99,999 = 1,099,999
  • Question 6
    1 / -0
    What is the difference between largest 6-digit number and 587?
    Solution
    The largest 6 digit number is 999999.
    According to the question:
    999999 - 587 = 999412
  • Question 7
    1 / -0
    Where will you put commas in four crore seventy five lakh ninety five thousand seven hundred and sixty two written in Indian system of numeration?
    Solution
    Four crore seventy five lakh ninety five thousand seven hundred and sixty two in figures is 4,75,95,762.
  • Question 8
    1 / -0
    Sachin owns a bakery shop. He made some cookies and needs to pack them in jars. Jars are of different sizes and capacities. They can hold one cookie, ten cookies, hundred cookies and thousand cookies and price of each jar is Rs. 1, Rs. 5, Rs. 10 and Rs. 20, respectively. If Sachin packed 2347 cookies in one lot, find the total price of the lot.
    Solution
    There could be many possibilities and combinations of jars could be arranged after initial partitioning into thousand, hundreds, tens and ones.
    Thousand cookie jars - 2
    Hundred cookie jars - 3
    Ten cookie jars - 4
    Ones cookie jar - 7
    Total cost = 2 x 20 + 3 x 10 + 4 x 5 + 7 x 1
    = 40 + 30 + 20 + 7 = Rs. 97
  • Question 9
    1 / -0
    The number 953356788 can be written in international system of numeration as _____________.
    Solution
    The number 953,356,788 is written in international system of numeration as Nine hundred and fifty three million three hundred fifty six thousand seven hundred and eighty eight.
  • Question 10
    1 / -0
    What is MLXVI less than smallest six digit number (in Arabic numerals)?
    Solution
    MLXVI = 1000 + 50 +10 + 5 = 1066 (in Arabic numerals).
    Smallest six digit number = 100000
    According to the question:
    = 100000 - 1066 = 98934
  • Question 11
    1 / -0
    Suraj has Rs. 16,000 in his bank account. He wants to buy a smart phone and a pair of shoes. If the price of a pair of shoes and smart phone is Rs. 8,945 and Rs. 5,745, respectively, then which of the following is the best estimate for checking if he has enough money in the bank to buy these items? (Give your answer to the nearest thousands.)
    Solution
    According to the question:
    8945 + 5745 = 14690
    When rounded to the nearest thousands, we get 15000.
    Yes, he has enough money to buy the items.
  • Question 12
    1 / -0
    Forty one million two hundred eighty five thousand two hundred seventy one in numerals is written as
    Solution
    Forty one million two hundred eighty five thousand two hundred seventy one in numerals is written as 41285271.
  • Question 13
    1 / -0
    What is the place value of underlined digit in 7445245?
    Solution


    The place value of 4 is hundred thousands.
  • Question 14
    1 / -0
    If the digits of a number move two places to the right in a place value chart, what will be the net effect on the value of the number?
    Solution
    The place value of a digit decreases by 100 times when the digit moves two places to the right.
  • Question 15
    1 / -0
    In a museum, it was written MMXVI on an artifact. How is this number written in Arabic numerals?
    Solution
    MMXVI = 2016 in Arabic numerals
  • Question 16
    1 / -0
    Which place values are in between hundred thousands and hundreds?
    Solution
    Ten thousands and thousands are in between hundred thousands and hundreds.
  • Question 17
    1 / -0
    If Bob's one day's pocket money is Rs. 40 and he saved his pocket money for 24 days, then the total money saved by him written in Roman numerals is
    Solution
    Money saved by him = 24 x 90 = 960
    X = 10, L = 50, C = 100, M = 1,000
    960 = 900 + 60,
    900 = 1000 - 100 = M - C = CM
    60 = 50 + 10 = L + X = LX
    Therefore, 960 = 900 + 60
    CM + LX = CMLX
  • Question 18
    1 / -0
    If the population of Denmark is 25740630. What is the number name in Indian system?
    Solution
    25740630 is two crore fifty seven lakh fourty thousand six hundred and thirty.

  • Question 19
    1 / -0
    A Giraffe is 4.3 m tall and a horse is 1.8 m tall. Estimate the sum of their heights by rounding off to the nearest whole number?
    Solution
    The sum of their heights = 4.3 + 1.8 = 6.1
    When rounded to nearest whole number, we get 6 m.

  • Question 20
    1 / -0
    The difference between the place value and face value of 6 in 72524567 is ________.
    Solution
    The place value of 6 is 60 and face value of 6 is 6.
    The difference between the place value and face value of 6 in 72524567 is (60 - 6 = 54).
  • Question 21
    1 / -0
    Total number of males and females in Cardiff are 98765756. If the number of males is 66867668, find the number of females.
    Solution
    Total population = 98765756
    Number of males = 66867668
    Total population = Number of females + Number of males
    98765756 = 66867668 + Number of females
    Number of females = 31898088

  • Question 22
    1 / -0
    Rahul has Rs. 65238 in his account he deposited Rs. 6786 on Monday and then withdrew Rs. 57860 on Thursday. How much money is left in his account?
    Solution
    Rahul already had Rs. 65238 and he deposited Rs. 6786 on Monday.
    Total money = 65238 + 6786 = 72024
    After withdrawing Rs. 57860 on Thursday from Rs. 72024, money left = 72024 - 57860 = Rs. 14164

  • Question 23
    1 / -0
    The distance between market and Raman's home is 1 km 115 m. He goes for walk from home to market and then comes back from market to home on few days in a week. Calculate the total distance covered by Raman in a week if he goes for 4 days in a week?
    Solution
    Distance covered between market to Raman's home is 1 km 115 m.
    Distance between Raman's home to market is 1 km 115 m.
    Total distance = 2 km 230 m
    Raman walks from home to market and comes back for about 4 days in a week = 4 × (2 km 230 m)= 8 km 920 m
  • Question 24
    1 / -0
    1050 Toys are manufactured in the plastic factory each day. How many of the toys would be manufactured altogether in the month of June, July and August. (Assume that the plastic factory works on all the days of these three months.)
    Solution
    1050 toys are manufactured in the plastic factory each day.

    Total number of days in the month of June, July and August = 30 + 31 + 31 = 92 days

    Total toys manufactured = 1050 x 92 = 96600
  • Question 25
    1 / -0
    Rankush subtracted two numbers 5647 and 956. The answer of this calculation was multiplied by 51 instead of 15. So, what is the difference between incorrect answer and actual answer?
    Solution
    Number after subtraction = 5647 - 956 = 4691

    Wrong calculation = 4691 51 = 239241

    Actual calculation = 4691 15 = 70365

    Difference in incorrect answer and actual answer = 239241 - 70365 = 168876
  • Question 26
    1 / -0
    Fill in the blanks.

    (i) CCXV written in Hindu Arabic numeral is A .
    (ii) 564689 rounded to nearest thousand is B .
    (iii) Estimated product of 6999 and 104 is C .
    Solution
    CCXV = 100 + 100 + 10 + 5 = 215

    A = 215
    B = 565000
    C = 7000 x 100 = 700000
  • Question 27
    1 / -0
    What is the difference between the place values of 6 between the greatest and the smallest 4-digit numbers formed by using the digits 3, 2, 5, 6 not more than once?
    Solution
    Greatest 4-digit number = 6532
    Smallest 4-digit number = 2356
    Place value of 6 in 6532 = 6000
    Place value of 6 in 2356 = 6
    Difference = 6000 - 6 = 5994
  • Question 28
    1 / -0
    State T for true and F for false.

    1. Place value of 8 in 758957563 is 8 lakh.
    2. Roman numeral for the smallest 3 digit number is D.
    3. 1 Billion = 100 crores
    4. Rounding off 8890 to nearest thousand is 9000.
    Solution
    Correct statements:

    1. Place value of 8 in 758957563 is 80 lakh.
    2. Smallest 3-digit number is C.
    3. 1 billion = 100 crores.
    4. Rounding 8890 to nearest thousand is 9000.
  • Question 29
    1 / -0
    If the new number is formed by interchanging ones and hundreds place digit of 5629, what will be the relation between them?
    Solution
    Number is 5629.
    New number formed by interchanging ones and hundreds place digit of 5629 is 5926.
    Hence, new number formed is greater than the old number.

  • Question 30
    1 / -0
    Match the following.

    Column A Column B
    1. 10 Million A. 10 Crore
    2. 10 Tens B. 1 Crore
    3. 100 Million C. 10000 Thousand
    4. 100 Lakh D. 1 Hundred
    Solution
    (1) 10 Million = 1 Crore
    (2) 10 Tens = 1 Hundred
    (3) 100 Million = 10 Crore
    (4) 100 Lakh = 10000 Thousand
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