Add a 3-digit Multiple of 10 to a 3-digit Number. The arrow key can be used to work from right to left if you prefer the standard written method.
More addition. Each set of ten questions is followed by a printable results page.
Find the missing number to make the total 1000. All answers are multiples of 50.
Adding 3 multiples of 100 is very similar to adding 3 single digits. Answer as many as you can in the time given.