Q451: Solve the problem.<br>-The stock market gained 18
Q452: Subtract.<br>-<img src="https://d2lvgg3v3hfg70.cloudfront.net/TB10331/.jpg" alt="Subtract. - A) 3.69
Q453: Add. Do not use a number
Q454: Find an equivalent expression with the
Q455: Subtract.<br>- <span class="ql-formula" data-value="-\frac{1}{8}-\frac{3}{5}"><span class="katex"><span class="katex-mathml"><math
Q457: Add. Do not use a number
Q458: Subtract.<br>-0 - 28<br>A) -28<br>B) 0<br>C) 28<br>D)
Q459: Divide.<br>- <span class="ql-formula" data-value="-1.8 \div 0.09"><span
Q460: Multiply.<br>- <span class="ql-formula" data-value="-2 \cdot(-0.2) \cdot
Q461: Simplify.<br>- <span class="ql-formula" data-value="\frac{3}{4}-\left(-\frac{1}{16}\right)+\frac{1}{2}-\frac{7}{8}"><span class="katex"><span class="katex-mathml"><math