1.
连一连。
①394+409
131
②352+279 | 507
③630+279 | 778
④156+351 | 638
⑤43+88 | 803
| ②845-156 | ③369+589 | ④506-248
| | |
258 | 958 | 407 | 689
445 | 717 | 793 | 349
| | |
⑤618-269 | ⑥298+147 | ⑦465+328 | ⑧906-189
| 120
②36×13+552÷6 | 116
③125-25÷5 | 560
④67+33×17 | 492
⑤250×8-460÷10 | 628
⑥466+208÷8 | 1954
| 22
②(84+180)÷(30-18) | 72
| ①300÷(30-45÷3) | | ②(500-80)÷(210-140) | | | | |
94 | 75 | 20 | 57 | 6 | | | |
③360÷4+20÷5 | ④174-63×13÷7 | | ⑤(220+16×5)÷4 |
| 682 | 826 | ④301+33×17 ②36×13+642÷3 | 268 | 628 | ⑤337×2-460÷10 ③300-160÷5 | 286 | 862 | ⑥466+720÷2
| ②36×13+552÷8 | ③125-25÷5 | ④67+33×17 | ⑤250×8-460÷10 | ⑥446+208÷8
| | | | |
| | | | |
537 | 120 | 116 | 472 | 1954 | 628
| 430 | 400 | 448
| | |
①230+152+48 | ②161+76+139 | ③248+135+65 | ④104+132+96+68
| 47 | 19 | 23 | 38 | 56
| | | | |
62 | 44 | 53 | 25 | 81 | 77
| ②368-125-99 | ③67+35-47 | | A.256-192-9 | B.95-80+56 | C.73+129-58
|