Insert ∈ or ∉ in each blank to make the resulting statement true. {2} ____ {2, 4, 6, 8}

Insert ∈ or ∉ in each blank to make the resulting statement true. {0} _____ {0, 1, 2, 5}

Multiply or divide as indicated. Write answers in lowest terms as needed. $3\frac{1}{4}\cdot 1\frac{2}{3}$

Multiply or divide as indicated. Write answers in lowest terms as needed. $2\frac{2}{3}\cdot 1\frac{3}{5}$

Perform the indicated operation and write the answer in decimal notation.$(3\times {10}^3)(1.3\times {10}^2)$

Insert ∈ or ∉ in each blank to make the resulting statement true. . 0 ____ ∅

Find each sum or difference. 4 - 9