《2025年口算训练四年级数学下册人教版升级版》

1. 根据加法写减法。
30 + 82 = 112
834 + 38 = 872
720 + 430 = 1150
480 + 160 =
420 + 520 =
964 - 964 =
464 + 166 =
940 - 663 =
880 + 27 =
411 + 511 =
987 - 187 =
491 - 423 =
960 - 15 =
403 + 304 =
907 - 573 =
600 - 295 =
500 - 120 =
85 + 115 =
328 + 372 =
800 - 150 =
152 + 748 =
260 + 370 =
940 - 480 =
405 - 206 =
300 + $\square$ = 500
100 + $\square$ = 1000
500 + $\square$ = 999
500 + $\square$ = 1000
70 + 80 = 500 - $\square$
$\square$ + 380 = 500
999 + $\square$ = 1000
$\square$ - 200 = 600
280 + $\square$ = 1000
$\square$ + 820 = 1000
350 + $\square$ = 700
310 - $\square$ = 200
870 - $\square$ = 170
250 + $\square$ = 250
350 + $\square$ = 500
600 + $\square$ = 1000
560 - $\square$ = 560
1000 - $\square$ = 1000
$\square$ - 256 = 673
$\square$ - 350 = 650
$\square$ + 728 = 1000

答案：

2. 根据减法写加法。
348 - 59 = 289
725 - 527 = 198
610 - 370 = 240

答案：

52×70 =
53×7 =
59×8 =
27×7 =
28×9 =
21×8 =
39×80 =
62×60 =
48×70 =
129×30 =
211×4 =
68×8 =
131×7 =
36×5 =
19×6 =
88×8 =
99×7 =
39×8 =
510×7 =
39×6 =
27×40 =
740 - 480 =
380 + 580 =
500×12 =
3000÷20 =
670 - 480 =
360 + 390 =
14×600 =
6400÷40 =
220 - 40 =
650 + 350 =
200×460 =
4200÷300 =
740 - 250 =
160 + 470 =
180×200 =
8100÷300 =
970 - 590 =
60 + 680 =
130×600 =
9600÷40 =
760÷19 =
470 + 270 =
350 - 190 =
9600÷80 =
25×300 =
530 + 290 =
370 - 80 =
7800÷20 =
160×60 =
70 + 280 =
610 - 520 =
3600÷200 =
190×400 =
360 + 540 =
810 - 630 =
7600÷40 =
400×23 =
270 + 390 =
530 - 340 =
8500÷50 =
200×360 =
800 - 360 =

答案：