Key learning points

1. There is set counting sequence for counting to 100 and beyond.
2. The patterns in the numbers make counting to 100 and beyond easier.
3. The tens digit in a two-digit number indicates which decade it belongs to.
4. The ones digit in two-digit number follows the pattern 1, 2, 3, 4, 5, 6, 7, 8, 9
5. We can count the numbers in two ways. This is called dual counting.

Keywords

• Decade numbers - A set of ten numbers, all beginning with the same number of tens.

• Digit - A single symbol used to make a numeral

• Dual counting - Counting the same set of numbers in two different ways.

Common misconception