Using the Abacus ( 1 point each )

1. What is the prime factorization of 80?

2. Mark has 5 ties for every 3 shirts he owns. He owns 24 shirts. How many ties does he own?

3. Nina averaged 89 on her first two exams. What grade must she obtain on her third test in order to average 91 for all three exams?

4. All of the students in Mr. Techknight’s class are taking either Spanish or Algebra or both subjects. Exactly 14 students are taking Spanish, exactly 16 students are taking Algebra, and exactly 4 are taking both subjects. What is the total number of students in Mr. Techknight’s class?

5. Using the numbers 1, 2, 3, 4: Create the largest product by filling in the blanks:

__ x __ and ___ x _

6. Kelly buys candy bars at 10 for a $1 and sells them at 5 for a $1. How many candy bars must she sell in order to make a profit of exactly $5?

= The Technician