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Name Class Practice 2-5 Date Properties of Numbers Name the property that each equation illustrates. 1. 83 + 6 = 6 + 83 ________________________________ 2. 15x + 15y = 15(x + y) ________________________________ 3. (8 7) 6 = 8 (7 6) ________________________________ 4. ________________________________ 5. 3(a + 2b) = 3a + 6b 6. 7 + (8 + 15) = (7 + 8) + 15 7. x + (–x) = 0 ________________________________ ________________________________ ________________________________ 8. 16 + 0 = 16 ________________________________ 9. 0 = 30 0 ________________________________ 10. wr = rw ________________________________ 11. -1· (-8) = 8 ________________________________ Give a reason to justify each step. 12. 22. Use mental math to simplify each expression. 13. 48 + 27 + 2 + 3 14. 10 8 3 10 15. Henry bought an apple for $0.75, some apricots for $1.50, some cherries for $3.25, and three bananas for $1.50. Find the total cost of the fruit.