2. Lesson # 7 Decimals written as money !

3. When doing operations with decimals… Think about MONEY !

4. How much money is $0.05 a)5 cents b)5 dollars c)Half a cent d)Or half a dollar ?

5. If you said… $0.05 is …half a dollar…or half a cent…or 5 bucks……then…

6. I’m sorry… You are W R O N G !!!!!!!!!!

7. $0.05 is equal to 5 cents.

8. Another example… $0.025 is equal to… A) A quarter B)Two and a half cents C)Twenty five cents D)Two dollars and fifty cents.

9. If you said that $0.025 is equal to B) Two and a half cents, then you are right!

10. So… When adding, subtracting, multiplying or dividing … Numbers with DECIMALS….

11. Think about… Cash MONEY

12. An example of adding… $0.015 + 0.015 = ?

13. $0.015 = one and a half cents Soooooooooo

14. 0.015 + 0.015 equals… One and a half cents PLUS one and a half cents… ( 0.03) Three Cents !

15. An example of subtracting… $1.25 – $0.05 = ?

16. Think… $1.25 equals one dollar and twenty five cents… Subtract… $0.05 (a nickel) Therefore $1.25 - $0.05 = $1.2 (One dollar and twenty cents)

17. An example of Multiplying… 0.12 x 2.0 = ?

18. Convert the “friendliest” number into groups and the other to MONEY!

19. 0.12 x 2.0 Make the 0.12 the money (12 cents) Make the 2.0 the number of groups

20. That means you have … Two groups of 12 cents… Which is 24 cents ( 0.24) !

21. An example of dividing… $0.35 ÷ 0.05 = ?

22. Think… 0.35 (35 cents) ÷ 0.05(5 cents)

23. How many times would… Five cents fit into 35 cents?

24. Seven ? Right !

25. Lets get ready for 12 practice questions ! That’s right “ 12 ”, 3 add, 3 subtract, 3 multiply and 3 divide.

26. Question # 1 0.1 + 0.01 = ?

27. Question # 2 0.25 – 0.2 = ?

28. Question # 3 0.5 x 3.0 = ?

29. Question # 4 0.35 ÷ 0.05 = ?

30. Question # 5 4.75 + 0.2 = ?

31. Question # 6 1.5 – 0.75 = ?

32. Question # 7 0.08 x 5.0 =

33. Question # 8 1.25 ÷ 0.25 = ?

34. Question # 9 0.025 + 0.25 = ?

35. Question # 10 1.1 – 0.03 = ?

36. Question # 11 25.0 x 0.01 = ?

37. Question # 12 2.25 ÷ 0.25 = ?

38. And now the answers… Get Ready!

39. Question # 1 0.1 + 0.01 = 0.11

40. Question # 2 0.25 – 0.2 = 0.05

41. Question # 3 0.5 x 3.0 = 1.5

42. Question # 4 0.35 ÷ 0.05 = 7

43. Question # 5 4.75 + 0.2 = 4.95

44. Question # 6 1.5 – 0.75 = 0.75

45. Question # 7 0.08 x 5.0 = 0.4

46. Question # 8 1.25 ÷ 0.25 = 5

47. Question # 9 0.025 + 0.25 = 0.275

48. Question # 10 1.1 – 0.03 = 1.07

49. Question # 11 25.0 x 0.01 = 0.25

50. Question # 12 2.25 ÷ 0.25 = 9

51. The END !