1. 10(9 + 2) = 10 ×◻ + 10 ×◻ | 2. 3(5 + 5) = 3 ×◻ + 3 ×◻ |
3. 9(1 + 5) = 9 ×◻ + 9 ×◻ | 4. -6(8 + 12) = -6 ×◻ + -6 ×◻ |
5. 21 (25 + 50) = | 6. 40 (75 + 60) = |
7. -12(85 + 95) = | 8. -( 29 + 33) = |
9. 10(4 + 5) = | 10. 8(1 + -10) = |
11. 30(25) = | 12. 20(45) = |