Comparison & Ordering Numbers: 1-50 Basic 1 Mathematics Lesson Note

ORDERING NUMBERS: 1-50

What is Ordering? Ordering means arranging numbers from smallest to largest or largest to smallest.

Example: Smallest to Largest: 5, 12, 28, 43 Largest to Smallest: 43, 28, 12, 5

Exercise 13: Order from smallest to largest:

1. 15, 3, 28, 7 → ___, ___, ___, ___
2. 42, 18, 5, 31 → ___, ___, ___, ___
3. 26, 9, 47, 13 → ___, ___, ___, ___

Exercise 14: Order from largest to smallest:

1. 8, 35, 16, 41 → ___, ___, ___, ___
2. 29, 6, 44, 17 → ___, ___, ___, ___
3. 33, 11, 48, 22 → ___, ___, ___, ___

Exercise 15: Fill in the missing numbers in order:

1. 23, 24, ___, 26, ___
2. 37, ___, 39, ___, 41
3. 12, 13, ___, ___, 16

Exercise 16: Which number comes between?

1. 25 ___ 27 (26)
2. 38 ___ 40 (39)
3. 14 ___ 16 (15)
4. 49 ___ 51 (50)

5. COMPARING NUMBERS: 1-50

Comparison Signs:

• < means “less than” (smaller)
• > means “greater than” (bigger)
• = means “equal to” (same)

Examples:

• 15 < 23 (15 is less than 23)
• 38 > 21 (38 is greater than 21)
• 17 = 17 (17 is equal to 17)

Exercise 17: Compare using <, >, or =:

1. 12 ___ 18
2. 35 ___ 29
3. 16 ___ 16
4. 7 ___ 24
5. 41 ___ 33

Exercise 18: Circle the bigger number:

1. 19 or 31? ___
2. 45 or 28? ___
3. 14 or 37? ___
4. 50 or 26? ___

Exercise 19: Circle the smaller number:

1. 22 or 8? ___
2. 46 or 39? ___
3. 15 or 32? ___
4. 6 or 43? ___

Exercise 20: True or False:

1. 25 > 18 ___
2. 34 < 29 ___
3. 47 = 47 ___
4. 9 > 21 ___
5. 40 < 50 ___

Exercise 21: Fill in the missing numbers:

1. 27 < ___
2. ___ > 15
3. 44 > ___
4. ___ < 36

Homework

1. Practice counting from 61 to 70 and back to 61
2. Write numbers 61-70 five times each
3. Order 10 numbers from your house from smallest to largest
4. Practice comparing numbers using <, >, = signs
5. Find numbers around your home and arrange them in order

Teacher: Use number lines and comparison charts to help pupils visualize number relationships