MathsDecimals Class 6 Extra Questions Maths Chapter 8

Decimals Class 6 Extra Questions Maths Chapter 8

Decimals Class 6 Extra Questions Maths Chapter 8

Extra Questions for Class 6 Maths Chapter 8 Decimals

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    Decimals Class 6 Extra Questions Very Short Answer Type

    Question 1.
    Write the following in decimals.
    5 hundreds 3 tens 8 ones 4 tenths
    Solution:
    5 Hundreds + 3 Tens + 8 Ones + 4 Tenths
    = 5 x 100 + 3 x 10 + 8 x 1 + 4 x \(\frac { 1 }{ 10 }\)
    = 500 + 30 + 8 + \(\frac { 4 }{ 10 }\)
    = 538 + \(\frac { 4 }{ 10 }\) = 538.4

    Question 2.
    Write 14.3 in place value table.
    Solution:

    Hundreds Tens Ones Tenths
    0 1 4 3

    Question 3.
    Write the following in decimals.
    Decimals Class 6 Extra Questions Maths Chapter 8
    Solution:
    Decimals Class 6 Extra Questions Maths Chapter 8
    Decimals Class 6 Extra Questions Maths Chapter 8

    Question 4.
    Write the following as decimals.
    (a) Three tens and eight-tenths
    (b) Fifteen point seven
    Solution:
    (a) Three tens and eight-tenths = 3 x 10 + 8 x = 30 + 0.8 = 30.8
    (b) Fifteen point seven = 15.7

    Question 5.
    Write the following as decimals.
    Decimals Class 6 Extra Questions Maths Chapter 8
    Solution:
    (a) 200 + 50 + 6 + \(\frac { 2 }{ 10 }\) = 256 + 0.2 = 256.2
    (b) 150 + 30 + \(\frac { 8 }{ 10 }\) = 180 + 0.8 = 180.8

    Question 6.
    Write in decimals:
    Decimals Class 6 Extra Questions Maths Chapter 8
    Solution:
    Decimals Class 6 Extra Questions Maths Chapter 8

    Question 7.
    Write as fractions in lowest form.
    (a) 0.05
    (b) 20.25
    Solution:
    Decimals Class 6 Extra Questions Maths Chapter 8

    Question 8.
    Write the following in decimals.
    Three hundred six and seven hundredths.
    Solution:
    Three hundred six and seven hundredths
    Decimals Class 6 Extra Questions Maths Chapter 8

    Question 9.
    Which is greater 0.4 or 0.5?
    Solution:
    0.4 = 4 and 0.5 = ±
    Here \(\frac { 5 }{ 10 }\) > \(\frac { 4 }{ 10 }\)
    ∴ o.5 > 0.4

    Question 10.
    Express the following as rupees using decimals:
    (a) 7 paise
    (b) 625 paise
    Solution:
    Decimals Class 6 Extra Questions Maths Chapter 8

    Decimals Class 6 Extra Questions Short Answer Type

    Question 11.
    Represent 1.3,3.8 and 4.1 on the number line.
    Solution:
    Decimals Class 6 Extra Questions Maths Chapter 8
    A represents 1.3
    B represents 3.8
    and C represents 4.1

    Question 12.
    Read the numbers from the place value table and write them in decimals;
    Decimals Class 6 Extra Questions Maths Chapter 8
    Solution:
    (a) 4 Thousands + 0 Hundreds + 2 Tens + 3 Ones + 6 Tenths + 0 Hundredths
    = 4 x 1000 + 0 x 100 + 2 x 10 + 3 x 1 + 6 x \(\frac { 1 }{ 10 }\) + 0 x \(\frac { 1 }{ 100 }\)
    10 100
    = 4000 + 0 + 20 + 3 + 0.6 + 0 = 4023.6

    (b) 2 Thousands + 8 Hundreds + 8 Tens + 0 Ones + 3 Tenths + 4 Hundredths
    = 2 x 1000 + 8 x 100 + 8 x 10 + 0 x 1 + 3 x \(\frac { 1 }{ 10 }\) + 4 x \(\frac { 1 }{ 100 }\)
    = 2000 + 800 + 80 + 0.3 + 0,04
    = 2880 + 0.34 = 2880.34

    (c) 6 Thousands + 4 Hundreds + 2 Tens + 8 Ones + 4 Tenths + 3 Hundredths
    = 6 x 1000 + 4 x 100 + 2 x 10 + 8 x 1 + \(\frac { 4 }{ 10 }\) + \(\frac { 3 }{ 100 }\)
    = 6000 + 400 + 20 + 8 + 0.4 + 0.03
    = 6428 + 0.43 = 6428.43

    Question 13.
    Write each of the following as decimals:
    Decimals Class 6 Extra Questions Maths Chapter 8
    Solution:
    Decimals Class 6 Extra Questions Maths Chapter 8

    Question 14.
    Convert the following unlike decimals into like decimals:
    Decimals Class 6 Extra Questions Maths Chapter 8
    Solution:
    LCM of 10, 50, 5 and 20 = 100
    Decimals Class 6 Extra Questions Maths Chapter 8

    Question 15.
    Write the following decimals in their expanded form:
    (a) 27.65
    (b) 102.05
    (c) 36.36
    (d) 0.507
    Solution:
    (a) 27.65
    Decimals Class 6 Extra Questions Maths Chapter 8
    (b) 102.05
    Decimals Class 6 Extra Questions Maths Chapter 8

    (c) 36.36
    Decimals Class 6 Extra Questions Maths Chapter 8
    (d) 0.507
    Decimals Class 6 Extra Questions Maths Chapter 8

    Question 16.
    Write each of the decimals as a mixed fraction.
    (a) 95.8
    (b) 15.78
    (c) 0.015
    (d) 19.91
    Solution:
    Decimals Class 6 Extra Questions Maths Chapter 8

    Question 17.
    Express each of the following in terms of litres (L) using decimals:
    (a) 625 mL
    (b) 760 mL
    (c) 11 L 125 mL
    (d) 7 L 350 mL
    Solution:
    (a) We know that 1000 mL = 1 L
    ∴ 625mL = \(\frac { 625 }{ 1000 }\)L = 0.625 L
    Thus, 625 mL = 0.625 L

    (b) We know that 1000 mL = 1 L
    ∴ 760 mL = \(\frac { 760 }{ 1000 }\) L
    = 0.760 L = 0.76 L
    Thus, 760 mL = 0.76 L

    (c) We know that 1000 mL = 1 L
    ∴ 11L 125L = 11 L + \(\frac { 125 }{ 1000 }\) L
    = (11 +0.125) L = 11.125 L
    Thus, 11 L 125 mL = 11.125 L

    (d) We know that 1000 mL = 1 L
    ∴ 7 L 350 mL = 7 L + \(\frac { 350 }{ 1000 }\) L
    = (7 + 0.350) L = 7.350 L = 7.35 L
    Thus, 7L 350 mL = 7.35 L

    Question 18.
    Write 3.03, 2.75 and 2.5 in ascending order.
    Solution:
    The given decimals are unlike.
    ∴ Their corresponding like decimals are 3.03, 2.75 and 2.50.
    Now neglecting the decimals, we have 303, 275 and 250.
    Since, 303 > 275 > 250,
    we have 3.03 > 2.75 > 2.50
    ∴ Ascending order is 2.50 < 2.75 < 3.03

    Question 19.
    Find the value of the following:
    (а) 15 – 9.363
    (B) 5.28 – 1.4 + 3.116
    Solution:
    Decimals Class 6 Extra Questions Maths Chapter 8 Q16
    Hence, 5.28 – 1.4 + 3.116 = 6.996

    Decimals Class 6 Extra Questions Higher Order Thinking Skills (HOTS)

    Question 20.
    Mr. Ranjan purchased 15.500 kg rice, 25.750 kg flour and 3.250 kg sugar. Find the total weight of his purchases. Is it 50 kg or less? If less, how much less?
    Solution:
    Weight of rice = 15.500 kg
    Weight of flour = 25.750 kg
    Weight of sugar = 3.250 kg
    Total weight of this purchases = 15.500 kg + 25.750 kg + 3.250 kg
    = 44.500 kg
    We see that the total weight of his purchases is less than 50 kg.
    Decimals Class 6 Extra Questions Maths Chapter 8
    Thus, the total weight 44.500 kg is 5.500 kg less than 50 kg.

    Question 21.
    Ten years old Rahul can carry a maximum weight of 15 kg. If he bought 4 kg 900 g of apples, 2 kg 600 g of grapes and 5 kg 300 g of mangoes. Can he carry the total weight that he bought. If yes, then how much more weight he can carry with him?
    Solution:
    Weight of apples = 4 kg 900 g
    Weight of grapes = 2 kg 600 g
    Weight of mangoes = 5 kg 300 g
    ∴ Total weight of his purchases = 4 kg 900 g + 2 kg 600 g + 5 kg 300 g
    = 4.900 kg + 2.600 kg + 5.300 kg
    = 12.800 kg
    But Rahul can carry a maximum weight of 15 kg.
    Thus more weight that he can carry with him = 15 kg – 12.800 kg
    Decimals Class 6 Extra Questions Maths Chapter 8
    = 2.200 kg

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