Solve Problems With Rational Numbers Practice Test

A recipe calls for $$2\frac{1}{3}$$ cups of flour. Sarah wants to make $$1\frac{1}{2}$$ times the recipe, but she only has $$3\frac{1}{4}$$ cups of flour available. How much more flour does she need, expressed as a mixed number?

A science class records the elevation of a drone relative to the launch point (launch point is $0$ m). The drone rises $12\frac{1}{2}$ m, then drops $18.75$ m, then rises again by $\frac{2}{3}$ of $9$ m. What is the drone’s final elevation relative to the launch point?