Counting to 100
Count numbers in order up to 100, including counting by tens.
Objective
Count numbers in order up to 100, including counting by tens.
What it means
Counting to 100 means saying numbers in order past 20, using tens and ones patterns.
Key terms
- tens
- groups of ten (10, 20, 30, ...)
- sequence
- numbers in their counting order
Rules to remember
- After a multiple of ten, the ones digit starts again at 1 (e.g. 39, 40, 41).
- Counting by tens: 10, 20, 30, ... 100.
Step by step
- 1Find the patternLook at the ones digit to see how the numbers are changing.
- 2Continue countingAdd one (or ten) to get the next number.
Common mistakes
- Forgetting the ones digit resets after a ten (29 to 30, not 20-10).
- Miscounting by tens.
Tips
- Use a hundred chart to see the pattern.
- Watch the tens digit when crossing a multiple of ten.