Q54: In 13 weeks, the value of
Q55: Multiply<br>- <span class="ql-formula" data-value="-1 \cdot 15"><span
Q56: During one year 28 new employees began
Q57: Multiply<br>- <span class="ql-formula" data-value="-7(-3)(- 10) \cdot7"><span
Q58: Multiply<br>- <span class="ql-formula" data-value="-10(-3)"><span class="katex"><span class="katex-mathml"><math
Q60: Simplify the given expression<br>- <span class="ql-formula"
Q61: Simplify the given expression.<br>- <span class="ql-formula"
Q62: Simplify .<br>- <span class="ql-formula" data-value="62-(20-5)"><span class="katex"><span
Q63: Simplify .<br>- <span class="ql-formula" data-value="(-3)^{2}+(-8)^{2}+7"><span class="katex"><span
Q64: Simplify .<br>- <span class="ql-formula" data-value="\frac{5}{9} \cdot\left(\frac{2}{3}-\frac{1}{4}\right)"><span