Printable Textbook: Fun with Numbers - Level 3 | Mental Maths - Class 1 PDF Download

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Fun with Numbers
Summary
In this chapter we will learn the following concepts:
1. To make greatest possible number using given digits:
 For example: We have to make greatest number using   4 ,  3 ,  7 ,  5
 Trick: To make the greatest number arrange the given digits in 
decreasing order.
 7543 is the greatest possible number here.
2. To make the smallest possible number using given digits:
 Trick: Here we arrange the given digits in increasing order to obtain 
the desired number.
3. Place value and face value of a digit in a number e.g. in 7542 place 
value of 5 is 500 & face value of 5 is 5.
4. To write numbers in expanded form:
 For example: 8659 = 8000 + 600 + 50 + 9
5. To write the number names of the given numbers.
6. Counting in 2’s, 5’s, 10’s, 25’s, 50’s, etc.
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Fun with Numbers
Summary
In this chapter we will learn the following concepts:
1. To make greatest possible number using given digits:
 For example: We have to make greatest number using   4 ,  3 ,  7 ,  5
 Trick: To make the greatest number arrange the given digits in 
decreasing order.
 7543 is the greatest possible number here.
2. To make the smallest possible number using given digits:
 Trick: Here we arrange the given digits in increasing order to obtain 
the desired number.
3. Place value and face value of a digit in a number e.g. in 7542 place 
value of 5 is 500 & face value of 5 is 5.
4. To write numbers in expanded form:
 For example: 8659 = 8000 + 600 + 50 + 9
5. To write the number names of the given numbers.
6. Counting in 2’s, 5’s, 10’s, 25’s, 50’s, etc.
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7. To arrange the given numbers in increasing and decreasing order
 Given numbers: 365, 653, 536, 635, 356
 Increasing order: 356 < 365 < 536 < 635 < 653
 (lowest to highest)
 Decreasing order: 653 > 635 > 536 > 365 > 356
 (highest to lowest)
Questions
1. Rearrange the numbers given below to make the greatest possible number.
6
7
0
2
4
2. Rearrange the numbers given below to make the smallest possible 5 digit 
number.
9
0
6
2
1
3. At which place the place value and the face value will be the same? 
4. Which of these numbers have more tens?
 (a) 879 (b) 789 (c) 197 (d) 907
5. The number just before 9990 is _________
6. What is the place value of 2 in 12548?
7. How many numbers have exactly 2 digits?
8. What is the sum of the place value and the face value of 5 in 2548?
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ME NT AL
MA
T
HS
 
Fun with Numbers
Summary
In this chapter we will learn the following concepts:
1. To make greatest possible number using given digits:
 For example: We have to make greatest number using   4 ,  3 ,  7 ,  5
 Trick: To make the greatest number arrange the given digits in 
decreasing order.
 7543 is the greatest possible number here.
2. To make the smallest possible number using given digits:
 Trick: Here we arrange the given digits in increasing order to obtain 
the desired number.
3. Place value and face value of a digit in a number e.g. in 7542 place 
value of 5 is 500 & face value of 5 is 5.
4. To write numbers in expanded form:
 For example: 8659 = 8000 + 600 + 50 + 9
5. To write the number names of the given numbers.
6. Counting in 2’s, 5’s, 10’s, 25’s, 50’s, etc.
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7. To arrange the given numbers in increasing and decreasing order
 Given numbers: 365, 653, 536, 635, 356
 Increasing order: 356 < 365 < 536 < 635 < 653
 (lowest to highest)
 Decreasing order: 653 > 635 > 536 > 365 > 356
 (highest to lowest)
Questions
1. Rearrange the numbers given below to make the greatest possible number.
6
7
0
2
4
2. Rearrange the numbers given below to make the smallest possible 5 digit 
number.
9
0
6
2
1
3. At which place the place value and the face value will be the same? 
4. Which of these numbers have more tens?
 (a) 879 (b) 789 (c) 197 (d) 907
5. The number just before 9990 is _________
6. What is the place value of 2 in 12548?
7. How many numbers have exactly 2 digits?
8. What is the sum of the place value and the face value of 5 in 2548?
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9. What is the difference of the place values of 9 and 2 in the number 9542? 
10. To which number should we add one to get the largest 4- digit number?
 Write the numbers in the standard form (Q11 to Q12):
11. 8000 + 500 + 40 + 2 = _________
12. 9000 + 9 = _________
13. What is the expanded form of the number 6542?
14. What should be added to 35 to make it equal to a century?
15. What should be subtracted from 419 to make it equal to triple century?
16. Arrange the numbers give below in ascending order:
 43, 34, 73, 37
17. Arrange the numbers given below in descending order:
 89, 98, 69, 96
18. Which figure has more dots?
  (A) (B) (C) (D)
 Complete the following (Q19 to Q22):
19. Counting in 10’s:
 50, 60, _______, _______
20. Counting in 25’s:
 10, 35, _______, _______
21. Counting in 35’s:
 35, 70, _______, _______
22. Counting in 8’s:
 10, 18, _______, _______
23. I come between 80 and 90 and there is a 5 in my name. Who am I?
24. I am equal to 5 notes of ?20. Who am I?
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ME NT AL
MA
T
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Fun with Numbers
Summary
In this chapter we will learn the following concepts:
1. To make greatest possible number using given digits:
 For example: We have to make greatest number using   4 ,  3 ,  7 ,  5
 Trick: To make the greatest number arrange the given digits in 
decreasing order.
 7543 is the greatest possible number here.
2. To make the smallest possible number using given digits:
 Trick: Here we arrange the given digits in increasing order to obtain 
the desired number.
3. Place value and face value of a digit in a number e.g. in 7542 place 
value of 5 is 500 & face value of 5 is 5.
4. To write numbers in expanded form:
 For example: 8659 = 8000 + 600 + 50 + 9
5. To write the number names of the given numbers.
6. Counting in 2’s, 5’s, 10’s, 25’s, 50’s, etc.
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7. To arrange the given numbers in increasing and decreasing order
 Given numbers: 365, 653, 536, 635, 356
 Increasing order: 356 < 365 < 536 < 635 < 653
 (lowest to highest)
 Decreasing order: 653 > 635 > 536 > 365 > 356
 (highest to lowest)
Questions
1. Rearrange the numbers given below to make the greatest possible number.
6
7
0
2
4
2. Rearrange the numbers given below to make the smallest possible 5 digit 
number.
9
0
6
2
1
3. At which place the place value and the face value will be the same? 
4. Which of these numbers have more tens?
 (a) 879 (b) 789 (c) 197 (d) 907
5. The number just before 9990 is _________
6. What is the place value of 2 in 12548?
7. How many numbers have exactly 2 digits?
8. What is the sum of the place value and the face value of 5 in 2548?
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9. What is the difference of the place values of 9 and 2 in the number 9542? 
10. To which number should we add one to get the largest 4- digit number?
 Write the numbers in the standard form (Q11 to Q12):
11. 8000 + 500 + 40 + 2 = _________
12. 9000 + 9 = _________
13. What is the expanded form of the number 6542?
14. What should be added to 35 to make it equal to a century?
15. What should be subtracted from 419 to make it equal to triple century?
16. Arrange the numbers give below in ascending order:
 43, 34, 73, 37
17. Arrange the numbers given below in descending order:
 89, 98, 69, 96
18. Which figure has more dots?
  (A) (B) (C) (D)
 Complete the following (Q19 to Q22):
19. Counting in 10’s:
 50, 60, _______, _______
20. Counting in 25’s:
 10, 35, _______, _______
21. Counting in 35’s:
 35, 70, _______, _______
22. Counting in 8’s:
 10, 18, _______, _______
23. I come between 80 and 90 and there is a 5 in my name. Who am I?
24. I am equal to 5 notes of ?20. Who am I?
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25. 5 hundreds + 9 tens + 7 ones = _________
26. 6 thousands + 2 ones = _________
27. In three dozen bananas, there are _________ bananas.
28. Which is the greatest three digit number? 
29. Which is the smallest five digit number?
30. How many tens are there in 5649?
Answer Key
1. 76420 16. 34, 37, 43, 73
2. 10269 17. 98, 96, 89, 69
3. Unit’s place 18. Figure (B)
4. 197 19. 70, 80 
5. 9989 20. 60, 85
6. 2000  21. 105, 140
7. 90 22. 26, 34
8. 505 23. 85
9. 8998 24. ?100
10. 9998  25. 597
11. 8542 26. 6002 
12. 9009 27. 36
13. 6000 + 500 + 40 + 2 28. 999 
14. 65 29. 10000
15. 119 30. Four
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ME NT AL
MA
T
HS
 
Fun with Numbers
Summary
In this chapter we will learn the following concepts:
1. To make greatest possible number using given digits:
 For example: We have to make greatest number using   4 ,  3 ,  7 ,  5
 Trick: To make the greatest number arrange the given digits in 
decreasing order.
 7543 is the greatest possible number here.
2. To make the smallest possible number using given digits:
 Trick: Here we arrange the given digits in increasing order to obtain 
the desired number.
3. Place value and face value of a digit in a number e.g. in 7542 place 
value of 5 is 500 & face value of 5 is 5.
4. To write numbers in expanded form:
 For example: 8659 = 8000 + 600 + 50 + 9
5. To write the number names of the given numbers.
6. Counting in 2’s, 5’s, 10’s, 25’s, 50’s, etc.
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T
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7. To arrange the given numbers in increasing and decreasing order
 Given numbers: 365, 653, 536, 635, 356
 Increasing order: 356 < 365 < 536 < 635 < 653
 (lowest to highest)
 Decreasing order: 653 > 635 > 536 > 365 > 356
 (highest to lowest)
Questions
1. Rearrange the numbers given below to make the greatest possible number.
6
7
0
2
4
2. Rearrange the numbers given below to make the smallest possible 5 digit 
number.
9
0
6
2
1
3. At which place the place value and the face value will be the same? 
4. Which of these numbers have more tens?
 (a) 879 (b) 789 (c) 197 (d) 907
5. The number just before 9990 is _________
6. What is the place value of 2 in 12548?
7. How many numbers have exactly 2 digits?
8. What is the sum of the place value and the face value of 5 in 2548?
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9. What is the difference of the place values of 9 and 2 in the number 9542? 
10. To which number should we add one to get the largest 4- digit number?
 Write the numbers in the standard form (Q11 to Q12):
11. 8000 + 500 + 40 + 2 = _________
12. 9000 + 9 = _________
13. What is the expanded form of the number 6542?
14. What should be added to 35 to make it equal to a century?
15. What should be subtracted from 419 to make it equal to triple century?
16. Arrange the numbers give below in ascending order:
 43, 34, 73, 37
17. Arrange the numbers given below in descending order:
 89, 98, 69, 96
18. Which figure has more dots?
  (A) (B) (C) (D)
 Complete the following (Q19 to Q22):
19. Counting in 10’s:
 50, 60, _______, _______
20. Counting in 25’s:
 10, 35, _______, _______
21. Counting in 35’s:
 35, 70, _______, _______
22. Counting in 8’s:
 10, 18, _______, _______
23. I come between 80 and 90 and there is a 5 in my name. Who am I?
24. I am equal to 5 notes of ?20. Who am I?
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25. 5 hundreds + 9 tens + 7 ones = _________
26. 6 thousands + 2 ones = _________
27. In three dozen bananas, there are _________ bananas.
28. Which is the greatest three digit number? 
29. Which is the smallest five digit number?
30. How many tens are there in 5649?
Answer Key
1. 76420 16. 34, 37, 43, 73
2. 10269 17. 98, 96, 89, 69
3. Unit’s place 18. Figure (B)
4. 197 19. 70, 80 
5. 9989 20. 60, 85
6. 2000  21. 105, 140
7. 90 22. 26, 34
8. 505 23. 85
9. 8998 24. ?100
10. 9998  25. 597
11. 8542 26. 6002 
12. 9009 27. 36
13. 6000 + 500 + 40 + 2 28. 999 
14. 65 29. 10000
15. 119 30. Four
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ACTIVITY 1
Number Names
Q.1 Write the following numbers in figures and words.
a. One more than 3009 =
b. Ten more than 9989 =
c. Two less than 5810 =
d.  Ten less than 4050 =
e. Six more than 1000 =
f. Hundred more than 2188 =
Order of Numbers
Q.2 Write the correct number.
1. The highest one-digit number 
2. The lowest two-digit number 
3. The highest four-digit number 
4. The lowest three-digit number 
5. The highest three-digit number 
6. The lowest four-digit number 
7. The highest six-digit number 
8. The lowest seven-digit number