The answer to 5 is: 1cm because 160 inches equals 406.4cm and that is over 1 which equals 406.4. the second fraction equals 1cm because 1inch equals 2.54 and 2.54 over 2.54 equals 1. The third fraction is 1over 406.4. So, that basically means 406.4 over 406.4 which equals 1.
The answer is 212.5 because 8 1/3= 25/3 and 25 1/2 equals 51/2. So, that equals 1275/6 because 1*21=1275 and 3*2=6. So your answer is 212.5 I hope this helps!! :-)
