MathCastle
Grade 4ChallengeDecimals to Hundredths

Decimals to Hundredths · Challenge problem

How many numbers of the form 1.□□1.\square\square (a 11, then two digits after the decimal point) have digits that add up to 1010? For example, 1.451.45 works because 1+4+5=101 + 4 + 5 = 10.