Video Transcript
Daniel spilt ink on his homework. Help him find the covered numbers.
First, we need to find the covered number in this sum: 14 add 27. First, let’s add the ones: four plus seven makes 11. We can write the one in the ones digit, and we need to carry the 10 into the tens column.
Now when we add in the tens column, we need to add two and one and one more. Two and one makes three, and one more makes four. 14 add 27 makes 41. The missing number in this sum is number four.
Now we need to find the missing number in 26 plus the missing number and six equals 62. To find the missing number in this sum, we can use the inverse operation. Subtraction is the opposite of addition. So we need to find 62 take away 26.
In the ones column, we have to subtract six from two. Because six is greater than two, we need to take a 10 from the tens column. So now we can subtract six from 12, which makes six. And now in the tens column, we need to subtract two from five, which is three. 62 take away 26 is 36.
The missing number in this sum is number three. So the covered numbers are four and three.
