Mathematics
Grade-4-
Easy

Question

In a marathon, Bucky completed the race in 1 hr 12 min 24 sec, Roger finished the race in 1 hr 10 min 12 sec, Tony finished in 1 hr 12 min 20 sec and Chadwick finished it in 1 hr 10 min 24 sec. If the results were ranked fastest to slowest, then the one who stands medal less is

  1. Bucky
  2. Roger
  3. Tony
  4. Chadwick

Hint:

Arranging the numbers in decreasing order of their values is called descending order.

The correct answer is: Bucky


    Here, we are given the timings of 4 boys who completed a race. We have to find the boy who will not win a medal.
    The timings of Bucky, Roger, Tony and Chadwick are 1 hr 12 min 24 sec, 1 hr 10 min 12 sec, 1 hr 12 min 20 sec and 1 hr 10 min 24 sec respectively.
    The values arranged in descending order is 1 hr 12 min 24 sec, 1 hr 12 min 20 sec, 1 hr 10 min 24 sec and 1 hr 10 min 12 sec.
    Since, Bucky took the highest time to finish the race. So, he will be medal less.
    Hence, the correct options is A.

    In descending order, the number with the highest value is written first, the number with value lesser than the highest is written in second place and so on.

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    Steve started going to gym, before starting the gym his weight was 45.8 kg, at the end of first week his weight came down to 45.5 kg. The next week it came down to 45.2 kg. He noticed a pattern and he predicted the weight he would be in the next week. The weight he predicted is

    Steve started going to gym, before starting the gym his weight was 45.8 kg, at the end of first week his weight came down to 45.5 kg. The next week it came down to 45.2 kg. He noticed a pattern and he predicted the weight he would be in the next week. The weight he predicted is

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    The hundredths in 72.8 is

    Here, we have to find the hundredths place digit of 72.8.
    72.8 can be written as 72.80.
    Since, the second digit after the decimal represents the hundredths place. So, the hundredths place digit is 0.
    Hence, the correct option is D.

    The hundredths in 72.8 is

    MathematicsGrade-4-
    Here, we have to find the hundredths place digit of 72.8.
    72.8 can be written as 72.80.
    Since, the second digit after the decimal represents the hundredths place. So, the hundredths place digit is 0.
    Hence, the correct option is D.
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    represents


    represents

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    The heights of the students of grade 4 are as follows:
    Albert – 3.8 feet
    Patrick – 3.5 feet
    John – 3.0 feet
    Adam – 3.10 feet
    Jacob – 3.6 feet
    For the selection of students for the long jump, Selectors asked them to stand in a line according to their heights in decreasing order (the tallest being the first participant). The student standing fourth in the line would be

    GIVEN-
    Heights of students-
    Albert – 3.8 feet
    Patrick – 3.5 feet
    John – 3.0 feet
    Adam – 3.10 feet
    Jacob – 3.6 feet
    TO FIND-
    Student standing in 4th position when arranged in decreasing order of heights.
    SOLUTION-
    We will first arrange heights of the given students in decreasing order-
    3.8, 3.6, 3.5, 3.10, 3.0.
    Hence, 4th position = 3.10 feet.
    Hence, when arranged in decreasing order of heights, the person on 4th position among the given set of people is Adam with a height of 3.10 feet.
    FINAL ANSWER-
    Option 'c' i.e. 'Adam' is the correct answer to the given question.

    The heights of the students of grade 4 are as follows:
    Albert – 3.8 feet
    Patrick – 3.5 feet
    John – 3.0 feet
    Adam – 3.10 feet
    Jacob – 3.6 feet
    For the selection of students for the long jump, Selectors asked them to stand in a line according to their heights in decreasing order (the tallest being the first participant). The student standing fourth in the line would be

    MathematicsGrade-4-
    GIVEN-
    Heights of students-
    Albert – 3.8 feet
    Patrick – 3.5 feet
    John – 3.0 feet
    Adam – 3.10 feet
    Jacob – 3.6 feet
    TO FIND-
    Student standing in 4th position when arranged in decreasing order of heights.
    SOLUTION-
    We will first arrange heights of the given students in decreasing order-
    3.8, 3.6, 3.5, 3.10, 3.0.
    Hence, 4th position = 3.10 feet.
    Hence, when arranged in decreasing order of heights, the person on 4th position among the given set of people is Adam with a height of 3.10 feet.
    FINAL ANSWER-
    Option 'c' i.e. 'Adam' is the correct answer to the given question.
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    The tenths digit in 152.79 is

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    marks scored by B = 15cross times 0.5 = 7.5
    marks obtained by C = 7.5
    so, highest marks is obtained by both B and C.

    The multiple-choice exam contains a total of 20 questions and each question carries 0.5 marks. There are no negative marks for the incorrect answer. Student A scores 6.5, student B has 15 correct answers and student C has scored 7.5. The top of the three is

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    marks scored by A = 6.5
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    marks obtained by C = 7.5
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    Water covers 71% of the earth’s surface area. The decimal and the fraction that represents the portion of water on earth is.

    The fraction of 71% equals 71 cross times 1 over 100 equals 71 over 100
    decimal of fraction obtained = 0.71

    Water covers 71% of the earth’s surface area. The decimal and the fraction that represents the portion of water on earth is.

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    The fraction of 71% equals 71 cross times 1 over 100 equals 71 over 100
    decimal of fraction obtained = 0.71
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    The one-liter juice bottle is equally served to the 8 members of a party. The decimal quantity of juice from the bottle each member received will be

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equals 0.125

    The one-liter juice bottle is equally served to the 8 members of a party. The decimal quantity of juice from the bottle each member received will be

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    Juice quantity received by each member =1 over 8
    decimal of fraction
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equals 0.125
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    The fractions that Adam chooses is 1 half, John chooses is 2 over 6, Ray chooses is 3 over 6. The ones that choose equivalent fractions are

    The fractions that Adam chooses is 1 half
     John chooses is 2 over 6
    Ray chooses is 3 over 6
    for adam and john           for adam and ray         for john and ray
    1 half space a n d space 2 over 6 space space space space space space space space space space space space space space space space space space space space space space space space 1 half space a n d space 3 over 6 space space space space space space space space space space space space space space space space space space space space space space space space fraction numerator 2 over denominator 3 space end fraction space a n d space 3 over 6
1 cross times 6 space space space 2 cross times 2 space space space space space space space space space space space space space space space space space space space space space 1 cross times 6 space space space space 3 cross times 2 space space space space space space space space space space space space space space space space space space space space space space space 2 cross times 6 space space space 3 cross times 3
equals 6 space space space space space equals 4 space space space space space space space space space space space space space space space space space space space space space space space equals 6 space space space space equals 6 space space space space space space space space space space space space space space space space space space space space space space space space equals 12 space space equals 9
    Therefore the ones who chose equivalent fraction are Adam and Ray.

    The fractions that Adam chooses is 1 half, John chooses is 2 over 6, Ray chooses is 3 over 6. The ones that choose equivalent fractions are

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    The fractions that Adam chooses is 1 half
     John chooses is 2 over 6
    Ray chooses is 3 over 6
    for adam and john           for adam and ray         for john and ray
    1 half space a n d space 2 over 6 space space space space space space space space space space space space space space space space space space space space space space space space 1 half space a n d space 3 over 6 space space space space space space space space space space space space space space space space space space space space space space space space fraction numerator 2 over denominator 3 space end fraction space a n d space 3 over 6
1 cross times 6 space space space 2 cross times 2 space space space space space space space space space space space space space space space space space space space space space 1 cross times 6 space space space space 3 cross times 2 space space space space space space space space space space space space space space space space space space space space space space space 2 cross times 6 space space space 3 cross times 3
equals 6 space space space space space equals 4 space space space space space space space space space space space space space space space space space space space space space space space equals 6 space space space space equals 6 space space space space space space space space space space space space space space space space space space space space space space space space equals 12 space space equals 9
    Therefore the ones who chose equivalent fraction are Adam and Ray.
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    The fractions that are equivalent are

    a. 8 over 7 text  and  end text 7 over 8           b. 7 over 2 text  and  end text 28 over 8         c. 3 over 2 text  and  end text 128 over 258           d. 5 over 2 text  and  end text 125 over 25
    space space 8 cross times 8 space space space 7 cross times 7
equals 64 space space space space equals 49           space 7 cross times 8 space space space space space 28 cross times 2
equals 56 space space space space space equals 56      3 cross times 258 space space space space space 128 cross times 2
equals 774 space space space space space space equals 256        5 cross times 25 space space space space space 125 cross times 2
equals 125 space space space space space space equals 250
     The cross multiplication of the pair 7 over 2 text  and  end text 28 over 8 is equal.
    Therefore,   7 over 2 text  and  end text 28 over 8 is an equivalent fraction.

    The fractions that are equivalent are

    MathematicsGrade-4-
    a. 8 over 7 text  and  end text 7 over 8           b. 7 over 2 text  and  end text 28 over 8         c. 3 over 2 text  and  end text 128 over 258           d. 5 over 2 text  and  end text 125 over 25
    space space 8 cross times 8 space space space 7 cross times 7
equals 64 space space space space equals 49           space 7 cross times 8 space space space space space 28 cross times 2
equals 56 space space space space space equals 56      3 cross times 258 space space space space space 128 cross times 2
equals 774 space space space space space space equals 256        5 cross times 25 space space space space space 125 cross times 2
equals 125 space space space space space space equals 250
     The cross multiplication of the pair 7 over 2 text  and  end text 28 over 8 is equal.
    Therefore,   7 over 2 text  and  end text 28 over 8 is an equivalent fraction.
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    The figure that shows the decimal number 0.69 is

    The figure that shows decimal number 0.69 is
    (a)

    The figure that shows the decimal number 0.69 is

    MathematicsGrade-4-
    The figure that shows decimal number 0.69 is
    (a)
    parallel
    Grade-4-
    Mathematics

    The decimal form and fractional form of the shaded portion in the figure is

    The decimal formed = 0.25
    The fraction formed from decimal number 0.25=25 over 100.

    The decimal form and fractional form of the shaded portion in the figure is

    MathematicsGrade-4-
    The decimal formed = 0.25
    The fraction formed from decimal number 0.25=25 over 100.
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    The decimal in the figure can be written in fraction as

    The decimal formed =0.68
    Fraction of decimal number 0.68 =68 over 100

    The decimal in the figure can be written in fraction as

    MathematicsGrade-4-
    The decimal formed =0.68
    Fraction of decimal number 0.68 =68 over 100
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    Convert the fraction 8 over 7 into decimal.

    T h e space d e c i m a l space f o r m space o f space f r a c t i o n space 8 over 7
equals long division by 7 yields 1.142857 pile none 8 negative 7 none negative negative negative none 10 negative none 7 none negative negative negative negative none none 30 none negative 28 none none negative negative negative negative none none none 20 none none negative 14 none none none negative negative negative negative none none none none 60 none none none negative 56 none none none negative negative negative negative none none none none none 40 none none none none negative 35 none none none none none negative negative negative negative none none none none none none 50 none none none none none negative 49 none none none none none none negative negative negative negative none none none none none none none 1 end pile end long division
equals 1.142857

    Convert the fraction 8 over 7 into decimal.

    MathematicsGrade-4-
    T h e space d e c i m a l space f o r m space o f space f r a c t i o n space 8 over 7
equals long division by 7 yields 1.142857 pile none 8 negative 7 none negative negative negative none 10 negative none 7 none negative negative negative negative none none 30 none negative 28 none none negative negative negative negative none none none 20 none none negative 14 none none none negative negative negative negative none none none none 60 none none none negative 56 none none none negative negative negative negative none none none none none 40 none none none none negative 35 none none none none none negative negative negative negative none none none none none none 50 none none none none none negative 49 none none none none none none negative negative negative negative none none none none none none none 1 end pile end long division
equals 1.142857
    parallel

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