Add −815+415.(1 point)
Responses
45
Start Fraction 4 over 5 End Fraction
−415
negative Start Fraction 4 over 15 End Fraction
415
Start Fraction 4 over 15 End Fraction
−1215
negative Start Fraction 12 over 15 End Fraction
−400
Add −815+415.(1 point)
Responses
45
Start Fraction 4 over 5 End Fraction
−415
negative Start Fraction 4 over 15 End Fraction
415
Start Fraction 4 over 15 End Fraction
−1215
negative Start Fraction 12 over 15 End Fraction
−400
Add −815+415.(1 point)
Responses
45
Start Fraction 4 over 5 End Fraction
−415
negative Start Fraction 4 over 15 End Fraction
415
Start Fraction 4 over 15 End Fraction
−1215
negative Start Fraction 12 over 15 End Fraction choose one
−400
To add -815 and 415, you can simply sum the two numbers. Here is the step-by-step process:
1. Start by aligning the numbers vertically, making sure to match the digits in their respective places:
-815
+415
2. Start by adding the ones place (the rightmost digit):
5
-815
+415
5 + 5 = 10. Write down 0 in the ones place and carry over 1 to the next column.
3. Move to the tens place:
1
-815
+415
1 + 1 (carry over) = 2. Write down 2 in the tens place.
4. Finally, move to the hundreds place:
2
-815
+415
-8 + 4 = -4. Write down -4 in the hundreds place.
Putting it all together, the sum of -815 and 415 is -400.
Therefore, the answer is -400.