Question

（71.3±0.5）+（2.262±0.002）等于多少

Answer 1

1) =71.3+0.5+2.262-0.002=74.06

2) =71.3+0.5+2.262+0.002=74.064

3) =71.3-0.5+2.262-0.002=73.06

4) =71.3-0.5+2.262+0.002=73.064