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