M2.1.1 For the adult
Hundreds, tens and ones
The 5 in 538 is not worth 5. So what is it worth?
What this chapter teaches
A digit is worth more or less by where it sits. In 538 the 5 is worth 500. The 0 in 304 holds the tens place.
Three questions to ask
There is no one right wording. Listen for the idea.
- What is the 5 worth in 538?
- How do you write three hundred and four?
- Why does 304 need its 0?
After the chapter, the learner can
- Show a number up to 999 as hundreds, tens and ones
- Say what each digit in 538 is worth
- Use 0 to hold an empty place, as in 305
What they copy into their notebook
10 ones make a ten. 10 tens make a hundred. In 538 the 5 is worth 500. The 3 is worth 30. The 8 is worth 8.