Show how to make one addend the next tens number.
15+37=?
15+37
40+30=60
To make one addend the next tens number, you need to adjust the number by adding the difference between the original number and the next tens number to the other addend.
For example, in the equation 15 + 37, the first addend is 15, and we want to make it the next tens number, which is 20.
To do this, we need to determine the difference between 20 and 15, which is 5.
Next, we add this difference of 5 to the second addend, which is 37.
37 + 5 equals 42.
Therefore, the sum of 15 + 37, with one addend being the next tens number, is 42.