85 take away 21 equals what.
We can make 85 using eight tens, which is 80, and five ones. We have to take away 21 from 85. Let’s start by taking away the ones. We have five. And we need to take away one. Five take away one is four. Now, let’s take away the tens. We have eight tens, which is 80. And we need to take away two of those tens or 20, one, two. We have six tens left. Six tens and four ones is 64.
85 take away 21 equals 64.