# Add and subtract decimals with a different number of decimal places, with and without the use of digital technologies

1. | Add A Tenth | |

2. | 0.1 less, 0.1 more than 40 | |

3. | 0.1 less, 0.1 more than 22 | |

4. | 10 less, 0.1 more than 80.1 | |

5. | 0.1 less, 0.1 more than 82 | |

6. | 0.1 less, 0.1 more than 99 | |

7. | Movin' One Up! 0.7+?=1 | |

8. | Ten up: What must be added to 62.3 to make 70? | |

9. | Ten Up 57.81 to 60 | |

10. | Ten Up 63.72 to 70 | |

11. | Ten Up 46.98 to 50 | |

12. | Ten Up 22.56 to 30 | |

13. | Ten Up 15.32 to 20 | |

14. | Ten Up 133.36 to 140 | |

15. | Ten Up 165.83 to 170 | |

16. | Ten Up 132.64 to 140 | |

17. | Ten Up 113.95 to 120 | |

18. | Ten Up 188.66 to 190 | |

19. | Changing numbers 2.351 add 0.3, 0.003, 0.03 | |

20. | Changing numbers 5.391 add 4, 0.004, 0.4 | |

21. | Changing numbers 4.345 add 0.004, 40, 0.04 | |

22. | Changing numbers 1.221 Add 0.7, 0.07, 7.007 | |

23. | Changing numbers 3.539 add 0.001, 1.1, 1.01 | |

24. | Hundredths crossing 69.39+6.38 | |

25. | In the swim: Addition of times | |

26. | Hundredths crossing: Addition of numbers with 2 dec places | |

27. | Hundredths crossing: Addition of numbers with 2 dec places | |

28. | Hundredths crossing: Addition of numbers with 2 dec places | |

29. | In the swim - Superfish v. Torpedos | |

30. | True/false mixed ops and decimals | |

31. | True/false mixed ops and decimals | |

32. | Spot the Difference: Write the difference between 3 number pairs | |

33. | Spot the Difference: Write the difference between 3 number pairs | |

34. | Spot the Difference: Write the difference between 3 number pairs | |

35. | Spot the Difference: Write the difference between 3 number pairs | |

36. | Spot the Difference: Write the difference between 3 number pairs | |

37. | How Much More? 9>8.6, 6>5.7, 4>3.3? | |

38. | Use the Pattern: Subtract (16-.3)(160-3)(1600-30) | |

39. | Use the Pattern: Subtract (15-0.1)(150-1)(1500-10) | |

40. | Use the Pattern: Subtract (20-0.4)(200-4)(2000-40) | |

41. | Use the Pattern: Subtract (13-.7)(113-7)(1300-70) | |

42. | Use the Pattern: Subtract (17-.5)(170-5)(1700-50) | |

43. | Use the Pattern: Subtract (11-0.6)(110-6)(1100-60) | |

44. | Plant products: Money multiplication and subtraction | |

45. | Movin' One Up! 0.1+?=1 | |

46. | Movin' One Up! 0.5+?=1 | |

47. | Movin' One Up! 0.2+?=1 | |

48. | Movin' One Up! 0.4+?=1 | |

49. | How Much Less? 1.2<2, 15.5<16, 3.8,4? | |

50. | How Much Less? 11.6<12, 13.7<14, 7.5<10? | |

51. | How Much More? 7>6.5, 1>0.2, 10>4.8 | |

52. | How Much More? 20>19.4, 12>11.8, 10>6.5? | |

53. | Movin' On Up! 13.7+?=16 | |

54. | Decimal Descent: Difference between 2 decimal numbers (same no.dec. plces) | |

55. | Decimal Descent: 25.54-5.1 | |

56. | Decimal Descent: 25.73-2.8 | |

57. | Movin' On Up! 13.9+?=16 | |

58. | Movin' On Up! 12.5+?=15 | |

59. | Movin' On Up! 11.2+?=14 | |

60. | Movin' On Up! 15.8+?=18 | |

61. | Ten up: What must be added to 34.4 to make 40? | |

62. | Ten up: What must be added to 18.3 to make 20? | |

63. | Ten up: What must be added to 46.5 to make 50? | |

64. | Ten up: What must be added to 26.8 to make 30? | |

65. | Tenths Tournament: 1- 0.1 | |

66. | Tenths Tournament: 1- 0.7 | |

67. | Tenths Tournament: 1- 0.8 | |

68. | Tenths Tournament: 1- 0.2 |