If 28 ⋅ 521 = 14,588, what is 2.8 × 5.21?(1 point)

2 answers

The product of 28 and 521 is 14,588.

To find the product of 2.8 and 5.21, we can multiply the decimal numbers just as we would with whole numbers and ignore the decimals until the end.

2.8 multiplied by 5.21 is:

2.8 × 5 = 14
2.8 × 0.21 = 0.588

Adding these two products together, we get:

14 + 0.588 = 14.588

Therefore, 2.8 × 5.21 is equal to 14.588.
Skip teaches children’s music lessons. He must purchase some materials to decorate the music room. He purchases 2 hanging spring swirls that cost $14.99 each, 5 hanging butterflies that cost $13.99 each, 10 flower cutouts that cost $11.99 each, and 4 butterfly window clings that cost $10.99 each. How much will his purchase cost before sales tax?(1 point)