1) The sum is 14 a) 7 + 8 b) 8 + 8  c) 9 + 5 d) 9 + 3 2) The sum of this fact is 18. a) 10 + 7 b) 9 + 7 c) 10 + 8 d) 5 + 6 3) The sum of this fact is 15. a) 9 + 6 b) 8 + 9 c) 10 + 7 d) 8 + 8 4) The sum of this fact is 17. a) 9 + 8 b) 7 + 7  c) 10 + 8 d) 8 + 7 5) The sum of this fact is 16. a) 10 + 7 b) 9 + 9  c) 8 + 8 d) 9 + 6 6) The sum of this fact is 12. a) 9 + 3 b) 7 + 7 c) 8 + 8 d) 10 + 3 7) The sum of this fact is 13. a) 7 + 7 b) 9 + 4 c) 10 + 5 d) 8 + 4 8) The sum of this fact is 19. a) 10 + 7 b) 10 +9 c) 9 +9 d) 9 + 7

Basic Operations

由
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？