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ElementaryNumber System
Counting & Numbers
Understanding numbers from 1 to 1000
Learn how to count, read and write numbers. The foundation of all mathematics.
✓ Digits 0–9 are used to form all numbers✓ Place value: ones, tens, hundreds, thous...✓ Even numbers end in 0, 2, 4, 6, 8
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📖 Understanding Counting & Numbers
Numbers are symbols we use to count, measure and label things. The digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 are used to write all numbers.
When counting objects, we assign one number to each object in order. The last number we say tells us how many objects there are in total.
Place value is very important. In the number 345, the digit 3 is in the hundreds place (worth 300), 4 is in the tens place (worth 40), and 5 is in the ones place (worth 5).
Numbers can be written in words: 1 = one, 2 = two, 10 = ten, 100 = one hundred, 1000 = one thousand.
🔑 Key Points to Remember
- ✓Digits 0–9 are used to form all numbers
- ✓Place value: ones, tens, hundreds, thousands
- ✓Even numbers end in 0, 2, 4, 6, 8
- ✓Odd numbers end in 1, 3, 5, 7, 9
- ✓Zero is neither positive nor negative
#numbers#counting#place value#elementary#digits
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