5.NBT.A.1
Recognize that in a multi-digit number, a digit in one place represents 10 times as much as it represents in the place to its right and 1/10 of what it represents in the place to its left.
Answer questions such as “what does the 8 represent in 681.4?” The answer here is 80. Or “the digit 8 in which number represents 0.08: 34.8, 45.68, 280, or 8.80?”