Question: Without a calculator , determine whether sqrt(45) is closer to 6 or 7 and explain your reasoning?
A) 6, because sqrt(36)=6 and sqrt(45 is closer to 36 than 49
B) 6, because 45 is closer to 36
C) 7, because sqrt(49)=7 and 45 is closer to 49
D) 6, because sqrt(45) ~6.7
Correct answer: D
Grade: 8 | Topic: Number System | Difficulty: Hard | Standard: 8.NS.A.2