Kendall's Vase - Tax

Alignments to Content Standards: 6.RP.A.3

Kendall bought a vase that was priced at \$450. In addition, she had to pay 3% sales tax. How much did she pay for the vase? Solutions Solution: Percent table Students just beginning to study percents might work from a percent table.  100% 10% 1% 2% 3% \$450.00 \$45.00 \$4.50 \$9.00 \$13.50

Adding the tax to the price of the vase gives the total cost of the vase:

13.50 + 450 = 463.50

Kendall paid \$463.50 for the vase. Solution: Reasoning from a benchmark percent Another approach is to find one percent of the \$450, which is \$4.50. Then 3% would be 3 times that amount which is \$13.50.

Adding the tax to the price of the vase gives the total cost of the vase:

13.50 + 450 = 463.50

Kendall paid \$463.50 for the vase. Solution: Finding 3 percent of a quantity is the same as finding three-hundredths of that quantity If students understand that finding 3% is the same as finding$\frac{3}{100}$of 450, then they can simply multiply to find the tax $$\frac{3}{100} \times 450 = 13.5$$ Adding the tax to the original price will produce the total cost. 13.50 + 450 = 463.50 Kendall paid \$463.50 for the vase.