NUMBERS Notes, Quizzes & Revision

What this note covers

• Counting and reading numbers
• Place value (units, tens, hundreds)
• Comparing and ordering numbers
• Simple operations: addition and subtraction examples
• Even & odd numbers and simple patterns
• Practical Kenyan examples (money, people, distances)

1. Number words (English & Kiswahili)

Tip: practise counting items you see every day — mangoes, goats, classmates (wazazi wa shule), or matatu seats).

2. Place value (how numbers are built)

Example: 2 4 5 = 245

So 245 = 200 + 40 + 5. Use place value to read large numbers (e.g., 1,234 = one thousand, two hundred thirty-four).

3. Number line (visual)

Use the number line to add (move right) or subtract (move left). Example: 4 + 3 — start at 4, move 3 steps → 7.

4. Comparing numbers

Use symbols: < (less than), > (greater than), = (equals).

Kenyan context example: A market has 120 mangoes and another stall has 85 mangoes. 120 > 85.

5. Even and odd numbers

An even number divides by 2 with no remainder (0,2,4,6,8...). An odd number leaves remainder 1 (1,3,5,7,9...).

6. Simple operations — examples with Kenyan examples

Addition

Example: Bus fare for 3 people is KSh 50 each. Total = 50 + 50 + 50 = 150. So KSh 150.

Subtraction

Example: A shop had 200 tomatoes. Sold 73. Remaining = 200 − 73 = 127 tomatoes.

Using place value to add

Add 245 + 176:

7. Practical tasks (practice these)

1. Count the pupils in your class. Write the number in words (English and Kiswahili).
2. If one matatu seat costs KSh 30, how much for 7 seats? (show working)
3. Write the number 3,406 using place value words: 3 thousands, 4 hundreds, 0 tens, 6 units.
4. Which is larger: 2,450 or 2,405? Explain why.
5. Circle the even numbers: 17, 28, 34, 51, 60

8. Answers (check after trying)

1. Class count — (student fills in).
2. 7 × 30 = 210 → KSh 210.
3. 3,406 = three thousand, four hundred, zero tens, six units.
4. 2,450 > 2,405 because in the tens and units area 50 > 05; also compare digits from left: thousands (2=2), hundreds (4=4), tens (5 > 0).
5. Even numbers: 28, 34, 60.

9. Useful notes for teachers/parents

• Use local items (beans, maize cobs, coins) to practise counting and grouping into tens/hundreds.
• Relate numbers to school life: fees, meals, pupils, desks — this makes learning meaningful.
• Encourage speaking both English and Kiswahili number words to strengthen bilingual skills.