Use Math Tools The thickness of each type of coin is shown in the table. How much thicker is a stack of a dollar's worth of nickels than a dollar's worth of quarters? Explain your answer.
Persevere with Problems Discuss two different ways to find the value of the expression 5.4 × 1.17 × 100 that do not require you to first multiply 5.4 × 1.17.
Construct an Argument Your friend thinks that 1.5 × 8 = 1.20 because you do not count the zero when placing the decimal point. Is your friend correct? Justify your reasoning.