Mathematics, 17.12.2020 17:30 les6965

Use the properties of real numbers to help simplify cach expression mentally. 10. (19 + 15) + 5 =
11. -3+ (23 + 48) =
12. $9.50 + $11.49 + $0.50 =
13. (9.25). 4 =
14. (-0.50 + 9.89) + 0.50 =
15. 6 X 8 X 5 =

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Use the properties of real numbers to help simplify cach expression mentally. 10. (19 + 15) + 5 =