1.
巧连线。
①100÷4×32
②31×2+30×2+26 | 800 ③25×(8×4) | 148 ④7×21+1 |
| 52
②7×8-4 | 72
③32÷8×4 | 41
④75-48+13 | 24
⑤63÷7×8 | 40
| 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
| 288 | 12
| |
| |
96 × (335-332) | (180-120)÷ 30 × 6 | 900÷(90÷2)
| ②36×13+552÷8 | ③125-25÷5 | ④67+33×17 | ⑤250×8-460÷10 | ⑥446+208÷8
| | | | |
| | | | |
537 | 120 | 116 | 472 | 1954 | 628
|