四、用竖式计算，带$*$的要验算。
$267+79$         $188+76$         $*376+255$
$257+145$         $428+473$         $*529+447$
$667+228$         $465+334$         $*273+669$
$338+273$         $264+446$         $*278+466$
$396+282$         $577+285$         $*469+333$

1. $267 + 79 = 346$
2. $188 + 76 = 264$
3. $376 + 255 = 631$，验算：$631 - 255 = 376$
4. $257 + 145 = 402$
5. $428 + 473 = 901$
6. $529 + 447 = 976$，验算：$976 - 447 = 529$
7. $667 + 228 = 895$
8. $465 + 334 = 799$
9. $273 + 669 = 942$，验算：$942 - 669 = 273$
10. $338 + 273 = 611$
11. $264 + 446 = 710$
12. $278 + 466 = 744$，验算：$744 - 466 = 278$
13. $396 + 282 = 678$
14. $577 + 285 = 862$
15. $469 + 333 = 802$，验算：$802 - 333 = 469$