Addition

Addition and subtraction

Calculate all of the following

1. 12+28-15

2. 33-12+17

3. 77-33-25

4. 66+21-44

5. 75-49+22

6. 128-49-31

7. 256+123-277

8. 421-123+85

9. 333-118-108

10. 327-45-123

happy trying!