21 times table up to 150

The pattern behind the list

Look at the last digit of each answer. From 21 × 1 to 21 × 10 it goes like this, and then the same pattern repeats every ten facts all the way up to 21 × 150:

1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 0

Working out big facts

You do not need to learn all 150 facts by heart. Use the method for the 21 times table instead: Split 21 into 20 and 1: work out the 20s and the 1s, then add them.