standard_description: Identify shapes as two-dimensional (lying in a plane, “flat”) or three-dimensional (“solid”).
problem_activity: Evaluate the expressions.
a.
$$24\div(2+1)+(11-8)\times2$$
b.
$$3^2\times4-10+(12-3)^2$$
c.
$$(3\times4)^2-10\times(12-3^2)$$


aligns: no