Subtraction practice worksheet for 2-digit numbers, focusing on subtracting 9 using a mental math strategy.
A math worksheet titled "Subtracting 9 from a 2-digit number" from urbrainy.com, featuring 10 subtraction problems where students subtract 9 from two-digit numbers, with a tip to "Try subtracting 9 by taking 10 and adding 1." The worksheet includes a cartoon dinosaur and is labeled "Page 1."