2. Lesson # 4 The “Teens” Times Table

3. People might say… Hey… This is a “teen” Lesson, intended for “teens”, That’s pretty Keen, If you know what I mean, Jellybean

4. This is a super fast way… To multiply “teens” In your Head !

5. For example… Try 15 x 16 = ?

6. Hard to do ? Try these four steps…

7. Step # 1(15x16) Add one teens number to the ones digit of the other. Add 15 + 6 = 21

8. Step # 2 (15x16) Multiply that sum by 10 21 x 10 = 210

9. Step # 3 (15x16) Multiply the two digits in the “ones” place. 5 x 6 = 30

10. Step # 4 (15x16) Add that (30) to your other answer (210). 210 + 30 = 240

11. Check with a calculator 15x16 = 240

12. Here are the four steps again… #1) Add one teens number to the ones digit of the other. #2) Multiply that sum by 10. #3) Multiply the ones digits. #4) Add this to your answer.

13. Try this in your head (17 x 13) Think… Step # 1) Add one teens number to the ones digit of the other.17 + 3 = 20 Step # 2) Multiply that sum by 10. 20 x 10 = 200 Step # 3) Multiply the ones digits. 7 x 3 = 21 Step # 4) Add them.200 + 21 = 221

14. This takes lots of practice so … Let’s do one more example…

15. Try this one ( 14 x 19) = ?

16. Think (14 x 19 ) = ? #1) 14 + 9 = 23 #2) 23 x 10 = 230 # 3) 4 x9 = 36 #4) 230 + 36 = 266

17. Did you get it right? If you did, you are ready to try some more. Get ready for 10 practice questions…

18. Remember to write down only the answer. Good Luck !

19. Question # 1 11 x 19 = ?

20. Question # 2 12 x 18 = ?

21. Question # 3 17 x 16 = ?

22. Question # 4 19 x 13 = ?

23. Question # 5 15 x 16 = ?

24. Question # 6 14 x 14 = ?

25. Question # 7 19 x 18 = ?

26. Question # 8 17 x 17 = ?

27. Question # 9 18 x 18 = ?

28. Question # 10 15 x 18 = ?

29. Now get ready to correct your answers !

30. The answers are on the way! Hope you are ready !

31. Question # 1 11 x 19 = 209

32. Question # 2 12 x 18 = 216

33. Question # 3 17 x 16 = 272

34. Question # 4 19 x 13 = 247

35. Question # 5 15 x 16 = 240

36. Question # 6 14 x 14 = 196

37. Question # 7 19 x 18 = 342

38. Question # 8 17 x 17 = 289

39. Question # 9 18 x 18 = 324

40. Question # 10 15 x 18 = 270

41. The End