Basic 3 · Mathematics · Counting and Representation
Numbers up to 10,000
In this topic you will count, read and write numbers up to 10,000 using thousands, hundreds, tens and ones.
By the end of these notes you should be able to:
- Read and write numbers up to 10,000
- Show numbers using place value
- Skip count in 100s and 1000s
What you already know
- Numbers up to 1000 (Basic 2)
Copy everything that has a blue line on its left into your notebook. The other parts are for reading.
- Strand
- Number
- Sub-strand
- Counting and Representation
- Indicator
- B3.1.1.1.1 – Use number names ,counting sequences and how to count to find out how many
Introduction
A football stadium in Kumasi can hold about 40,000 people. A small town may have 7,500 people. To read big numbers we use place value.
1. Place Value up to Thousands
| Thousands | Hundreds | Tens | Ones |
|---|---|---|---|
| 4 | 3 | 2 | 5 |
4,325 is 4 thousands, 3 hundreds, 2 tens and 5 ones.
We read it as "four thousand, three hundred and twenty-five".
2. Writing Numbers in Words
| Number | Words |
|---|---|
| 1,050 | one thousand and fifty |
| 6,708 | six thousand, seven hundred and eight |
| 9,999 | nine thousand, nine hundred and ninety-nine |
| 10,000 | ten thousand |
3. Skip Counting
In 100s: 3,100, 3,200, 3,300, 3,400 …
In 1000s: 1,000, 2,000, 3,000 … 10,000
Common mistake: 6,708 has no tens. The 0 holds the tens place.
New words
- thousand
- Ten hundreds; 1,000.
- place value
- The value of a digit because of its place.
- digit
- One of the signs 0 to 9.
- ten thousand
- Ten thousands; 10,000.
Summary
- 10 hundreds = 1 thousand; 10 thousands = 10,000.
- 4,325 is 4 thousands, 3 hundreds, 2 tens and 5 ones.
- Zero holds an empty place.
Class activity: Number Builders
- Pick four number cards.
- Arrange them to make a 4-digit number.
- Read it aloud and write it in words.
- Make the biggest and smallest numbers possible.
You need: Bottle tops, Bundles of sticks, Locally made number cards
Exercises
Answer in your exercise book first, then check your answers.
1. How many hundreds make one thousand?
- A. 10
- B. 100
- C. 1,000
- D. 5
Show answer
Answer: 1010 × 100 = 1,000.2. What is the value of 7 in 7,284?
- A. 7,000
- B. 700
- C. 70
- D. 7
Show answer
Answer: 7,0007 is in the thousands place.3. 10 thousands make 10,000.
- A. True
- B. False
Show answer
Answer: TrueTen thousands is ten thousand.4. In 3,456 the 4 means 40.
- A. True
- B. False
Show answer
Answer: FalseThe 4 is in the hundreds place, so it means 400.5. 2,000 + 300 + 50 + 1 = ______
Show answer
Answer: 2,351Add the place values.6. Write 8,047 in words.
Show answer
Answer: Eight thousand and forty-seven8 thousands, 0 hundreds, 47.
Homework
- Find a 4-digit number at home (on a receipt, calendar or bill). Write it in words.