standard_description: Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
problem_activity: Solve. Show or explain your work.
a.
$$0.35 \times 0.4$$
b.
$$2.02 \times 4.2 $$


aligns: no