Suppose we know that the last two digits of a number are 50. Use appropriate divisibility tests to select all the statements that we know *must* be true. divisible by 4 divisible by 9 divisible by 5 divisible by 3 divisible by 10 divisible by 2 \( > \) Next Question

Write each decimal as a percent. \( \begin{array}{l}\text { 10. } 3.9 \\ \text { 11. } 81\end{array} \) \( \begin{array}{ll}\text { 18. } 6.75 & \text { 14. } 2.81 \\ \text { 16. } 0.0046 & \text { 17. } 0.0069\end{array} \) Write each number as a percent.

Convince Me! Use Structure Dario says, "I can find \( 9 \times 0<3 \times 1 \) without computing. I can think about properties that I know." What could he mean?

1. \( \frac{2}{3}+\frac{5}{3} \)

5.-Realiza las siguientes operaciones dando el resultado como fracción: \[ \begin{array}{lll}\text { a) } 3,6+\frac{4}{5}-2,08= & \text { b) } 0,3+\frac{2}{9}-0,7= & \text { c) } 3,23-3,23=\end{array} \]

b) \( -5: \frac{10}{3}+\frac{10}{4} \)