MathCastle
Grade 4SuperchallengeDecimals to Hundredths

Decimals to Hundredths · Superchallenge problem

Lily rounds a number in two steps: first to the nearest tenth, then that answer to the nearest whole number. Max rounds the same number straight to the nearest whole number. (Both round halves up, so 0.450.45 becomes 0.50.5 and 0.50.5 becomes 11.) How many numbers between 00 and 55 with exactly two digits after the decimal point give Lily and Max different answers?