The rows of 1, 2, 5 and 10 are the core facts.
With them you can also work out hard times facts easily.
Example: 7 × 6 is hard, but:
5 × 6 = 30 (core), 2 × 6 = 12
Together: 30 + 12 = 42 → 7 × 6 = 42
Tip: Split the hard number into a core number plus the rest.
The numbers filled in show the solution.
Example
- 42,30,12,42
For parents
What does this exercise practice?
Core facts help you derive the big times tables from the small ones.
Common pitfalls
Some children try to memorize everything, which is much more work.
How to practice at home
Try it: 6 × 8 = 5 × 8 + 1 × 8 = 40 + 8 = 48.
Related: Multiply, Times array, Swap