Meaning of 10s | Babel Free

Definitions

1. Tens, written as a number but in plural form; a range of the numbers ten (10) to nineteen (19).
   plural, plural-only
2. The tens, the second decade of a century: the 1910s, 2010s, etc.
   plural, plural-only

Examples

“Q. 237. Four sixes are how many 24s? 12s? 8s? 6s? 4s? 2s? 1s? 8 fives are how many 10s? 40s? 20s? 5s? 2s? 1s?”

CEFR level