If there were 61 eggs on a shelf and then 31 of them fell down, how many eggs are left?
We’re starting with 61 eggs. 31 of them fall down. And we wanna know how many are remaining. This word problem is telling us we have some. Then some left or we had some less. And we wanna know about the remaining. This is a subtraction problem.
We need to subtract the number of eggs that fell from the number of eggs we started with. We started with 61. 31 of them fell. And we want to subtract. After we line them up vertically with their place values in order, we start with the ones place. And we need to subtract one minus one equals zero. Then we can move on to the tens place. And here we will subtract three from six. Six minus three is three. 61 minus 31 equals 30. 30 eggs remain.