Hundredths 1
This 12-question quiz moves decimal addition out to two places, the hundredths.
You will mostly add pairs of values like 0.49 + 0.91 = ? and 0.64 + 0.89 = ?, with a handful of true or false items where you decide if a given sum is right.
A small thing that trips people up is carrying from the hundredths into the tenths, so it pays to add the rightmost column first and work left.
A couple of the answers come out to clean whole numbers, which is always a satisfying check.
Recommended level: beginner to intermediate.