### Home > CAAC > Chapter 1 > Lesson 1.1.3 > Problem 1-24

1-24.

Compute without a calculator. Homework Help ✎

427 − (−3)

−50 + (−150)

Change the subtraction problems into addition problems.

427 + 3 = 430

−50 + (−150) = −200

1-24.

Compute without a calculator. Homework Help ✎

427 − (−3)

−50 + (−150)

Change the subtraction problems into addition problems.

427 + 3 = 430

−50 + (−150) = −200