1.
7 divided by 10 is 0.70
0.70 is not equivalent to 0.45
2.
4 divided by 5 is 0.8
hence,
0.8 is equivalent to 0.8
3.
21 divided by 25 is 0.84
1 and 21/25 is 1.84
1.84 is not equivalent to 1.72
4.
7 divided by 20 is 0.35
Hence,
0.35 is equivalent to 0.35