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All About Decimals

All About Decimals. Review Game. Properties. Metric Units. Estimating Decimals. Adding & Subtracting Decimals. Multiplying & Dividing Decimals. 100. 100. 100. 100. 100. 200. 200. 200. 200. 200. 300. 300. 300. 300. 300. 400. 400. 400. 400. 400. 500. 500. 500.

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All About Decimals

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  1. All About Decimals Review Game

  2. Properties Metric Units Estimating Decimals Adding & Subtracting Decimals Multiplying & Dividing Decimals 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500

  3. Identify the property shown. 12.6 + 0 = 12.6 A

  4. Identity Property of Addition

  5. Identify the property shown. 8.6 x 4.5 x 3.2 = 8.6 x 3.2 x 4.5 A

  6. Commutative Property of Multiplication

  7. Identify the property shown. 5.1 + (2.7 + 4.9) = (5.1 + 2.7) + 4.9 A

  8. Associative Property of Addition

  9. Identify the property shown. 8.3 + 0 + 9.2 = 0 + 9.2 + 8.3 A

  10. Commutative Property of Addition

  11. Identify the property shown. 4.8 x 1 = 4.8 A

  12. Identity Property of Multiplication

  13. Choose a reasonable estimate. Height of a maple tree 25 cm 25 m 25 km A

  14. 25 m

  15. 8.17 kL = _____ L A

  16. 8,170 L

  17. 3.2 cm = _____ m A

  18. .032 m

  19. 2 km 7 m = _____ km A

  20. 2.007

  21. 6 kg 14 g = _____ g A

  22. 6,014 g

  23. Estimate 2,040.247 to the nearest tenth. A

  24. 2,040.2

  25. Estimate by rounding to the nearest whole number. 23.5 + 29.7 = A

  26. 54

  27. Use rounding to estimate the product 42.6 x 31.3 A

  28. 42.6 x 31.3 40 x 30 = 1,200

  29. Estimate using compatible numbers. 40.82 ÷ 7.4 A

  30. 40.82 ÷ 7.4 41 ÷ 7 = 42 ÷ 7 = 6

  31. Estimate using front-end estimation. 13.49 + 7.62 + 4.12 A

  32. 13.49 7.62 + 4.12 + 1 24 + 1 = 25

  33. 23.05 + 8.9 = A

  34. 31.95

  35. 43.07 − 8.59 = A

  36. 34.48

  37. 54.94 – 12 = A

  38. 42.94

  39. Sam ordered a wallet for $30, a sweater for $28.92, and a watch for $35.81. What was the total cost of Sam’s order? A

  40. $94.73

  41. At one store, an 18-speed bicycle costs $174.99. At another store, the same bicycle costs $222.98. How much money can you save by purchasing the bike at the first store? A

  42. $47.99

  43. .23 x .5 = A

  44. .115

  45. 1.65 ÷ .5 = A

  46. 3.3

  47. 1.056 x 2.3 = A

  48. 2.4288

  49. A eucalyptus tree grows about 5.45 meters in one year. At that rate of growth, how much will the tree grow in 3.5 years? A

  50. 19.075 meters

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