893
A shape that has fewer than 8 faces and fewer than 10 edges is a triangular prism. A triangular prism has 5 faces (2 triangular faces and 3 rectangular faces) and 9 edges. It meets the criteria of having fewer than 8 faces and fewer than 10 edges.
tetrahedron
900
acid
Lithium.
It is one more than 129, or one fewer than 131. Alternatively, it can be considered as 10 more than 120 or 10 fewer than 140. There are other variations on the theme. Another approach is to consider it as 10 times 13 or one tenth of 1300. Or double 65 or half of 260.
1/10 is less than 2/5
P2p
903-457 = 446
903 is a composite number. Its factors are 1, 3, 7, 43, and 903.
0.903 = 903/1000
Well, honey, that number is 9,764. Let's break it down: 9 thousands, which is 9000, 7 fewer hundreds than thousands, so that's 9000 - 700 = 8300, 1 fewer tens than hundreds, which is 830 - 10 = 820, and finally 8 fewer ones than thousands, making it 9000 - 8 = 8992. So, put it all together and you've got 9,764.