Q37: Solve the problem.<br>-After one round in a
Q38: Simplify.<br>- <span class="ql-formula" data-value="\frac{7}{23}-\frac{13}{46}+\frac{4}{23}-\frac{5}{46}"><span class="katex"><span class="katex-mathml"><math
Q39: List the terms of the expression.<br>-
Q40: Add. Do not use a number
Q41: Divide.<br>- <span class="ql-formula" data-value="\frac{4}{3} \div\left(-\frac{1}{3}\right)"><span class="katex"><span
Q43: Add. Do not use a number
Q44: Divide.<br>- <span class="ql-formula" data-value="-\frac{3}{2} \div\left(-\frac{2}{3}\right)"><span class="katex"><span
Q45: Divide.<br>- <span class="ql-formula" data-value="\frac{-3.2}{0.8}"><span class="katex"><span class="katex-mathml"><math
Q46: Simplify.<br>- <span class="ql-formula" data-value="\frac{15 a b}{21
Q47: Write an inequality with the same