Jan estimated that 49% of $19.58 is $10. She rounded 49%to 50% and rounded $19.58 to
Chapter 49, Problem 23(choose chapter or problem)
Jan estimated that 49% of $19.58 is $10. She rounded 49%to 50% and rounded $19.58 to $20. Then she mentally calculated 50%of $20. Use Jans method to estimate 51% of $49.78. Explain how toperform the estimate.
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