一、直接写出得数。（每题1分，共24分）
$90 + 60 =$ $16 + 19 =$ $630 - 30 =$ $44 + 38 - 50 =$
$210 - 40 =$ $83 - 58 =$ $200 + 800 =$ $51 - 14 - 15 =$
$32 + 47 =$ $500 + 800 =$ $5000 + 3000 =$ $24 + 59 - 31 =$
$135 - 62 =$ $92 - 27 =$ $8900 - 8000 =$ $35 + 50 + 20 =$
$40 - 23 =$ $340 - 70 =$ $7000 + 200 =$ $62 + 18 + 40 =$
$500 + 320 =$ $600 + 700 =$ $800 + 400 =$ $75 - 55 + 31 =$

一 150 35 600 32 170 25 1000 22 79 1300 8000 52 73 65 900 105 17 270 7200 120 820 1300 1200 51

二、用竖式计算，带*的要验算。（每题4分，验算各1分，共40分）
*$418 + 74 =$         $546 - 285 =$         $510 - 164 - 79 =$
$920 - 673 =$ * $643 + 258 =$         $387 + 93 - 294 =$
*$708 - 459 =$ * $800 - 645 =$         $604 - 375 + 447 =$

二 492 261 267 247 901 186 249 155 676 竖式及验算略