M2.3.2 For the adult
The 2, 5 and 10 times tables
The answers in the 5 times table end in 5 or 0. Why?
What this chapter teaches
The 2 table gives even numbers, the 5 table ends in 5 or 0, and the 10 table ends in 0. The 5 table is half of the 10 table. A common mistake is thinking every answer in the 5 table ends in 5.
Three questions to ask
There is no one right wording. Listen for the idea.
- What do you notice about the last digits in the 5 times table?
- How could you find 8 × 5 if you only know 8 × 10?
- Why can 45 not be in the 2 times table?
After the chapter, the learner can
- Say the 2, 5 and 10 times tables
- Spot the pattern in the last digits of each table
What they copy into their notebook
The 2 times table gives even numbers. The 5 times table ends in 5, 0, 5, 0. The 10 times table always ends in 0. Count in 2s, 5s or 10s to find an answer.