There are 20 tenths because there are 10 tenths in one whole.
4/10 + 9/20 =8/20 + 9/20 = 17/20
20 tenths; 2 ones.
9 and 6/40 if simplified 9 and 3/20
19/20
There are 20 tenths because there are 10 tenths in one whole.
4/10 + 9/20 =8/20 + 9/20 = 17/20
20 tenths; 2 ones.
20 (as there are 10 tenths is one whole).
9 and 6/40 if simplified 9 and 3/20
Think of it as currency, for example 2 ones = 2 of $1 = $2 total tenths of dollar = 10 Cents then 20 x 10 Cents = 200 Cents = $2 so they are the same. As is 200 hundredths, and so on
2.05 or 41/20.
20
6/10 + 4/8 =24/40 + 20/40 = 44/40 = 22/20 = 11/10 = 1⅒
19/20
4
17/20