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Playing with Numbers

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Factors and Multiples

Subtopic

Factors and Multiples under Playing with Numbers for Grade 6 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The smallest multiple of any number (excluding zero) is:

    A.

    00

    B.

    11

    C.

    The number itself

    D.

    1010

  2. 2.

    What is the HCF of 1515 and 2525?

    A.

    11

    B.

    33

    C.

    55

    D.

    1515

  3. 3.

    Which of these numbers is divisible by both 33 and 55?

    A.

    1010

    B.

    1212

    C.

    1515

    D.

    2020

Download the worksheet for Playing with Numbers - Factors and Multiples to practice offline. It includes additional chapter-level practice questions.

Prime and Composite Numbers

Subtopic

Prime and Composite Numbers under Playing with Numbers for Grade 6 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of these numbers is divisible by more than two numbers?

    A.

    1111

    B.

    1313

    C.

    1515

    D.

    1717

  2. 2.

    What is the prime number just before 1111?

    A.

    77

    B.

    88

    C.

    99

    D.

    1010

  3. 3.

    The sum of the prime numbers 33 and 1111 is:

    A.

    1414

    B.

    1313

    C.

    1515

    D.

    1616

Download the worksheet for Playing with Numbers - Prime and Composite Numbers to practice offline. It includes additional chapter-level practice questions.

Tests for Divisibility of Numbers

Subtopic

Tests for Divisibility of Numbers under Playing with Numbers for Grade 6 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The number 108108 is divisible by 66 because it is:

    A.

    Odd and divisible by 33

    B.

    Even and divisible by 33

    C.

    Divisible by 55

    D.

    Divisible by 1010

  2. 2.

    The number 832832 is divisible by 88 because its last three digits (832832) divided by 88 gives:

    A.

    104104

    B.

    100100

    C.

    8080

    D.

    4040

  3. 3.

    Check the number 4,6424,642 for divisibility by 1111. The sum of digits at odd places (2+6=8)(2+6=8) and even places (4+4=8)(4+4=8) have a difference of:

    A.

    11

    B.

    00

    C.

    1111

    D.

    22

Download the worksheet for Playing with Numbers - Tests for Divisibility of Numbers to practice offline. It includes additional chapter-level practice questions.

Common Factors and Common Multiples

Subtopic

Common Factors and Common Multiples under Playing with Numbers for Grade 6 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Identify the full list of common factors of 2828 and 4242.

    A.

    1,2,7,141, 2, 7, 14

    B.

    1,2,4,7,141, 2, 4, 7, 14

    C.

    1,2,7,14,281, 2, 7, 14, 28

    D.

    1,2,3,7,141, 2, 3, 7, 14

  2. 2.

    Which of the following is a common multiple of 55 and 99?

    A.

    1515

    B.

    2525

    C.

    4545

    D.

    5050

  3. 3.

    What are the common factors of 1616 and 4040?

    A.

    1,2,4,81, 2, 4, 8

    B.

    1,2,4,8,161, 2, 4, 8, 16

    C.

    1,2,41, 2, 4

    D.

    1,2,4,5,81, 2, 4, 5, 8

Download the worksheet for Playing with Numbers - Common Factors and Common Multiples to practice offline. It includes additional chapter-level practice questions.

Prime Factorisation

Subtopic

Prime Factorisation under Playing with Numbers for Grade 6 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following is the prime factorisation of 120120?

    A.

    10×1210 \times 12

    B.

    2×2×2×3×52 \times 2 \times 2 \times 3 \times 5

    C.

    8×158 \times 15

    D.

    4×304 \times 30

  2. 2.

    Find the prime factorisation of 119119.

    A.

    1×1191 \times 119

    B.

    7×177 \times 17

    C.

    7×7×27 \times 7 \times 2

    D.

    17×7×117 \times 7 \times 1

  3. 3.

    Which expression represents the prime factorisation of 118118?

    A.

    2×592 \times 59

    B.

    1×1181 \times 118

    C.

    2×2×292 \times 2 \times 29

    D.

    59×2×159 \times 2 \times 1

Download the worksheet for Playing with Numbers - Prime Factorisation to practice offline. It includes additional chapter-level practice questions.

Highest Common Factor (HCF)

Subtopic

Highest Common Factor (HCF) under Playing with Numbers for Grade 6 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Determine the HCF of 22×32^2 \times 3 and 2×322 \times 3^2.

    A.

    2

    B.

    3

    C.

    6

    D.

    12

  2. 2.

    What is the HCF of 8,168, 16 and 2424?

    A.

    4

    B.

    16

    C.

    2

    D.

    8

  3. 3.

    Find the HCF of 7,147, 14 and 2828.

    A.

    1

    B.

    14

    C.

    7

    D.

    28

Download the worksheet for Playing with Numbers - Highest Common Factor (HCF) to practice offline. It includes additional chapter-level practice questions.

Lowest Common Multiple (LCM)

Subtopic

Lowest Common Multiple (LCM) under Playing with Numbers for Grade 6 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Calculate the LCM of 4,9,4, 9, and 1212.

    A.

    1212

    B.

    108108

    C.

    1818

    D.

    3636

  2. 2.

    What is the LCM of 77 and 88?

    A.

    1515

    B.

    5656

    C.

    2828

    D.

    1414

  3. 3.

    Calculate the Lowest Common Multiple of 1010 and 100100.

    A.

    1010

    B.

    200200

    C.

    100100

    D.

    10001000

Download the worksheet for Playing with Numbers - Lowest Common Multiple (LCM) to practice offline. It includes additional chapter-level practice questions.