Free printable 10 times table worksheets. Every fact from 10 x 0 to 10 x 12, printed both ways round, with an optional answer key.
Multiplying a whole number by 10 moves each digit one place to the left and leaves a 0 in the ones place: 10 x 7 is 70, and 10 x 12 is 120. That place-value idea is what makes the 10s the anchor for the 5s, which are half of them, and the 9s, which are one group less.
Each sheet holds the whole table: 10 x 0 to 10 x 12 and the same facts turned around, twenty-five in all, each printed once and in a new order every time.

Because it stops being true with decimals. 10 x 0.5 is 5, not 0.50. Saying the digits move one place to the left works for whole numbers now and for decimals later.
The 5s are half of the 10s, and the 9s are the 10s minus one group. 5 x 8 is half of 80, and 9 x 8 is 80 - 8.
Ten groups of nothing is still nothing. The 0 facts are on the sheet because they are the ones children second-guess, not because they are hard.