1Cademy - Adding 23.5 + 41.38

Example

Adding 23.5 + 41.38

Add $23.5 + 41.38$ using the decimal addition procedure:

Align the decimal points — write 23.5 above 41.38 so that both decimal points line up vertically.
Insert a placeholder zero — the number 23.5 has only one decimal digit while 41.38 has two, so append a zero to get 23.50. This is valid because $\frac{5}{10} = \frac{50}{100}$ , meaning $0.5 = 0.50$ .
Add as whole numbers and place the decimal point — add $2350 + 4138 = 6488$ , then position the decimal point below the aligned decimal points to obtain 64.88.