文章1. 345 + 678 = ? 2. 890 - 456 = ? 3. 123 × 45 = ? 4. 789 ÷ 21 = ? 5. 567 + 321 - 456 = ? 6. 890 - 321 + 456 = ? 7. 123 × 78 + 456 = ? 8. 345 ÷ 15 × 2 = ? 9. 789 + 123 - 456 ÷ 12 = ? 10. 567
当然可以,以下是每个算式的答案: 345 + 678 = 1023 890 - 456 = 434 123 × 45 = 5535 789 ÷ 21 = 37 567 + 321 - 456 = 432 890 - 321 + 456...
