Question

Kelly subtracted 2.3 from 20 and got 17.7. explain why this answer is reasonable

Answer 1

20-2.3=17.7 what don't you understand? 

20-2= 18 

18-.3=17.7
its reasonable because if you do the calculation, 17.7 is the answer
HOPE HELPED:D
this is 5th grade,lol