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 GrADe 6: MATheMATiCS [TerM 4] 297
Unit 1
Whole n Umbers 1.1 Represent, order and compare big numbers
1. Write the number symbol for each number.
 (a) three hundred million and five thousand
 (b) three hundred million and five hundred thousand
 (c) three hundred million and fifty thousand
 (d) three hundred million and five hundred
2. Write the number name for each number.
(a) 700 400 030 
(b) 700 040 300
(c) 700 004 030 
(d) 700 043 000
(e) 704 000 030 
(f) 700 004 300
3. Round each of the numbers in question 2 off to the nearest
 (a) hundred
 (b) million
 (c) thousand
 (d) ten thousand
 (e) hundred thousand.
4. Round each number off to the nearest 5, and to the nearest 10.
(a) 27 (b) 124
(c) 309 (d) 796
5. Write the number symbol for each number.
 (a) two hundred and three million five hundred and seventy-nine 
 thousand one hundred and seventeen
Maths_English_LB_Grade6_Book.indb   297 2016/12/15   4:21:54 PM
Page 2


 GrADe 6: MATheMATiCS [TerM 4] 297
Unit 1
Whole n Umbers 1.1 Represent, order and compare big numbers
1. Write the number symbol for each number.
 (a) three hundred million and five thousand
 (b) three hundred million and five hundred thousand
 (c) three hundred million and fifty thousand
 (d) three hundred million and five hundred
2. Write the number name for each number.
(a) 700 400 030 
(b) 700 040 300
(c) 700 004 030 
(d) 700 043 000
(e) 704 000 030 
(f) 700 004 300
3. Round each of the numbers in question 2 off to the nearest
 (a) hundred
 (b) million
 (c) thousand
 (d) ten thousand
 (e) hundred thousand.
4. Round each number off to the nearest 5, and to the nearest 10.
(a) 27 (b) 124
(c) 309 (d) 796
5. Write the number symbol for each number.
 (a) two hundred and three million five hundred and seventy-nine 
 thousand one hundred and seventeen
Maths_English_LB_Grade6_Book.indb   297 2016/12/15   4:21:54 PM
298 UNiT 1: WhOLe NUMBerS
 (b) five hundred and seventy-eight million one hundred and 
 twenty-three thousand four hundred and sixty-seven 
 (c) ninety-eight million fifty thousand six hundred and eighteen
 (d) nine million eight hundred and seventy-six thousand five 
 hundred and forty-three
 (e) nine hundred and seven million seven hundred and seventeen 
 thousand and fourteen
6. Now rewrite the number symbols you wrote in question 5 in 
descending order (from highest to lowest).
7. In each case, write =, > or < between the two numbers.
 (a) 3 492 897 and 3 940 289  
 (b) 6 374 294 and 6 374 294 
 (c) 102 901 890 and 201 899 013  
 (d) 1 000 010 and 1 000 010 
1.2 Investigate even, odd and prime numbers
For any whole number as input number, the output number of this flow 
diagram is an odd number:
     input number                            rule                       output number
any whole number  × 2 + 1 odd number
For any whole number as input number, the output number of this flow 
diagram is an even number:
     input number                rule            output number
any whole number × 2 even number
1. Use the flow diagrams above to make 5 odd numbers and 5 even 
numbers.
Maths_English_LB_Grade6_Book.indb   298 2016/12/15   4:21:54 PM
Page 3


 GrADe 6: MATheMATiCS [TerM 4] 297
Unit 1
Whole n Umbers 1.1 Represent, order and compare big numbers
1. Write the number symbol for each number.
 (a) three hundred million and five thousand
 (b) three hundred million and five hundred thousand
 (c) three hundred million and fifty thousand
 (d) three hundred million and five hundred
2. Write the number name for each number.
(a) 700 400 030 
(b) 700 040 300
(c) 700 004 030 
(d) 700 043 000
(e) 704 000 030 
(f) 700 004 300
3. Round each of the numbers in question 2 off to the nearest
 (a) hundred
 (b) million
 (c) thousand
 (d) ten thousand
 (e) hundred thousand.
4. Round each number off to the nearest 5, and to the nearest 10.
(a) 27 (b) 124
(c) 309 (d) 796
5. Write the number symbol for each number.
 (a) two hundred and three million five hundred and seventy-nine 
 thousand one hundred and seventeen
Maths_English_LB_Grade6_Book.indb   297 2016/12/15   4:21:54 PM
298 UNiT 1: WhOLe NUMBerS
 (b) five hundred and seventy-eight million one hundred and 
 twenty-three thousand four hundred and sixty-seven 
 (c) ninety-eight million fifty thousand six hundred and eighteen
 (d) nine million eight hundred and seventy-six thousand five 
 hundred and forty-three
 (e) nine hundred and seven million seven hundred and seventeen 
 thousand and fourteen
6. Now rewrite the number symbols you wrote in question 5 in 
descending order (from highest to lowest).
7. In each case, write =, > or < between the two numbers.
 (a) 3 492 897 and 3 940 289  
 (b) 6 374 294 and 6 374 294 
 (c) 102 901 890 and 201 899 013  
 (d) 1 000 010 and 1 000 010 
1.2 Investigate even, odd and prime numbers
For any whole number as input number, the output number of this flow 
diagram is an odd number:
     input number                            rule                       output number
any whole number  × 2 + 1 odd number
For any whole number as input number, the output number of this flow 
diagram is an even number:
     input number                rule            output number
any whole number × 2 even number
1. Use the flow diagrams above to make 5 odd numbers and 5 even 
numbers.
Maths_English_LB_Grade6_Book.indb   298 2016/12/15   4:21:54 PM
 GrADe 6: MATheMATiCS [TerM 4] 299
2. For each flow diagram below, investigate whether the output 
numbers of the flow diagram will be 
•	 odd numbers in all cases or
•	 even numbers in all cases or
•	 odd numbers in some cases, even numbers in other cases.
 Give examples to support your answers.
 (a) any odd number × 3 + 1
 (b) any even number × 3 + 1
 (c) any odd number × any odd number + 1
 (d) any even number × any odd number + 1
 (e) any even number × any even number + 1
3. In each case, investigate whether the statement is true or false.  
Give examples to demonstrate your answers.
 (a) An odd number times an odd number is always an odd number.
 (b) An even number times an even number is always an even number.
 (c) An even number times an odd number is always an odd number.
 (d) Any multiple of an even number is even.
 (e) Any multiple of an odd number is odd.
4. How many of all the multiples of 3, smaller than 1 000, are odd 
numbers?
5. How many of all the multiples of 7 are odd numbers?
6. (a) Write all the prime numbers bigger than 60 but smaller than 70.
 (b) Write all the prime numbers bigger than 40 but smaller than 50.
7. Investigate whether the statement below is true. Then write a 
paragraph that will convince the reader that what you say is true. 
If an odd number smaller than 100 is not a prime number, it is a multiple 
of 3 or 5 or 7.
Maths_English_LB_Grade6_Book.indb   299 2016/12/15   4:21:54 PM
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FAQs on Textbook: Whole Numbers (Term 4) - Mathematics for Grade 6

1. What are whole numbers and how are they different from other types of numbers?
Ans. Whole numbers are the set of non-negative numbers that include zero and all positive integers (1, 2, 3, ...). They do not include fractions or decimals, unlike rational numbers, which can be expressed as fractions. Whole numbers differ from integers, which include both positive and negative whole numbers, and from natural numbers, which exclude zero.
2. How do you add and subtract whole numbers?
Ans. To add whole numbers, you simply combine the values. For example, 3 + 5 = 8. For subtraction, you take one number away from another. For example, 9 - 4 = 5. It’s important to line up the numbers correctly when adding or subtracting larger numbers to ensure accuracy.
3. What are some real-life applications of whole numbers?
Ans. Whole numbers are used in everyday situations such as counting objects (like apples or books), measuring distances (like kilometers or meters), and managing finances (like counting money). They are essential for tasks that involve quantifying items or values without needing fractions or decimals.
4. Can you explain the concept of place value in whole numbers?
Ans. Place value refers to the value of a digit based on its position in a number. For example, in the number 345, the digit 3 is in the hundreds place, so it represents 300, the 4 is in the tens place, representing 40, and the 5 is in the ones place, representing 5. Understanding place value helps in performing operations like addition and subtraction correctly.
5. How do you multiply and divide whole numbers?
Ans. To multiply whole numbers, you can use repeated addition. For example, 4 multiplied by 3 (4 x 3) means adding 4 three times (4 + 4 + 4 = 12). For division, you are splitting a number into equal parts. For example, 12 divided by 3 (12 ÷ 3) means how many times 3 fits into 12, which is 4. It's important to note that division by zero is undefined.
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