一、直接写出得数。（每题 1 分，共 32 分）
88 + 90 =
1000 - 300 =
510 - 60 =
82 - 20 - 40 =
31×3 =
5600 - 600 =
7000 + 200 =
56 - 47 + 31 =
20 + 90 =
6700 - 6000 =
40 + 600 =
91 - 28 + 35 =
100 - 40 =
850 + 90 =
1500 - 800 =
30 - 17 + 42 =
61 - 36 =
1300 - 700 =
950 - 500 =
46 - 22 - 21 =
11×8 =
600 + 260 =
2000 + 500 =
7×5 - 20 =
84÷4 =
130 - 20 =
110 - 50 =
36 + 48 - 53 =
21×2 =
700 + 700 =
800 + 400 =
64 - 37 - 24 =

一 178 700 450 22 93 5000 7200 40 110 700 640 98 60 940 700 55 25 600 450 3 88 860 2500 15 21 110 60 31 42 1400 1200 3

二、用竖式计算，带 * 的要验算。（每题 4 分，验算各 1 分，共 40 分）
*658. + 752 =
902 - 506 =
*648. - 296 =
493 + 287 =
*924. - 456 =
*796. + 884 =
800 - 429 + 542 =
178 + 199 + 236 =
999 - 239 - 435 =

二 1410 396 352 780 468 1680 913 613 325 竖式及验算略