1. Carol puts $5.50 in her piggy bank each week. She has been doing this for 15 weeks. How much has she saved? 2.Buttons come in packs of 12. How many packs should you buy if you need 50 buttons?

3.The florist puts 8 flowers in a vase. How many vases can she fill completely if she has 75 flowers?

4.Caleb bought a t-shirt at the Aquarium for $7.99. He gave the clerk $10. How much change did he receive?

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.