krit.club logo

Number System

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

Place value and ordering numbers

Subtopic

Place value and ordering numbers under Number System for Grade 6 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the value represented by the digit 55 in 5,100,0005,100,000?

    A.

    500,000500,000

    B.

    5,000,0005,000,000

    C.

    50,000,00050,000,000

    D.

    5,0005,000

  2. 2.

    Write 'Two hundred thousand and fifty-six' in figures.

    A.

    200,560200,560

    B.

    200,056200,056

    C.

    20,05620,056

    D.

    2,000,0562,000,056

  3. 3.

    Calculate 0.05×100.05 \times 10.

    A.

    0.0050.005

    B.

    55

    C.

    0.50.5

    D.

    5050

Download the worksheet for Number System - Place value and ordering numbers to practice offline. It includes additional chapter-level practice questions.

Integers and negative numbers

Subtopic

Integers and negative numbers under Number System for Grade 6 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which number is exactly in the middle of −2-2 and 22?

    A.

    11

    B.

    −1-1

    C.

    00

    D.

    22

  2. 2.

    Find the result of 12+(−15)12 + (-15).

    A.

    33

    B.

    2727

    C.

    −3-3

    D.

    −27-27

  3. 3.

    Starting at 00 on a number line, you move 44 units left, then 22 units right. Where are you?

    A.

    22

    B.

    −2-2

    C.

    −6-6

    D.

    66

Download the worksheet for Number System - Integers and negative numbers to practice offline. It includes additional chapter-level practice questions.

Factors, multiples, and primes

Subtopic

Factors, multiples, and primes under Number System for Grade 6 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the smallest prime number?

    A.

    00

    B.

    11

    C.

    22

    D.

    33

  2. 2.

    How many factors does the number 1616 have?

    A.

    33

    B.

    44

    C.

    55

    D.

    66

  3. 3.

    Identify which of these numbers between 3030 and 4040 is a prime number.

    A.

    3333

    B.

    3535

    C.

    3737

    D.

    3939

Download the worksheet for Number System - Factors, multiples, and primes to practice offline. It includes additional chapter-level practice questions.

Highest Common Factor (HCF) and Lowest Common Multiple (LCM)

Subtopic

Highest Common Factor (HCF) and Lowest Common Multiple (LCM) under Number System for Grade 6 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the smallest common multiple of 33 and 1313?

    A.

    1313

    B.

    2626

    C.

    3939

    D.

    33

  2. 2.

    What is the Highest Common Factor (HCF) of 100100 and 150150?

    A.

    1010

    B.

    2525

    C.

    5050

    D.

    100100

  3. 3.

    Find the LCM of 88 and 1414.

    A.

    5656

    B.

    2828

    C.

    112112

    D.

    22

Download the worksheet for Number System - Highest Common Factor (HCF) and Lowest Common Multiple (LCM) to practice offline. It includes additional chapter-level practice questions.

Squares, cubes, and roots

Subtopic

Squares, cubes, and roots under Number System for Grade 6 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Find the value of 643\sqrt[3]{64}.

    A.

    4

    B.

    8

    C.

    16

    D.

    32

  2. 2.

    Evaluate 13\sqrt[3]{1}.

    A.

    0

    B.

    1

    C.

    3

    D.

    11

  3. 3.

    What is the square root of 100100?

    A.

    10

    B.

    20

    C.

    50

    D.

    100

Download the worksheet for Number System - Squares, cubes, and roots to practice offline. It includes additional chapter-level practice questions.

Rounding and estimation

Subtopic

Rounding and estimation under Number System for Grade 6 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is 4.554.55 rounded to one decimal place?

    A.

    4.54.5

    B.

    4.64.6

    C.

    4.504.50

    D.

    5.05.0

  2. 2.

    Round 0.000980.00098 to one significant figure.

    A.

    0.00090.0009

    B.

    0.0010.001

    C.

    0.00100.0010

    D.

    0.000980.00098

  3. 3.

    What is 1,2501,250 rounded to the nearest 100100?

    A.

    1,2001,200

    B.

    1,3001,300

    C.

    1,2501,250

    D.

    1,0001,000

Download the worksheet for Number System - Rounding and estimation to practice offline. It includes additional chapter-level practice questions.