Instructor's Key - Unit 1
UNIT | | |
|13 | |
| |Math and Calculator Skills |
Review Questions
Answer the following questions in the spaces provided.
1. Describe the two different types of calculators.
2. Name the four basic functions of calculators.
3. Match the following keys to their function:
|Add to memory _____ |a) M- |e) CM |
|Subtract from memory _____ |b) MC |f) +M |
|Recall from memory _____ |c) RM |g) MR |
|Clear memory _____ |d) M+ |h) -M |
4. Describe the function of the constant key.
5. You should press the clear key before starting a new calculation. True or false?
6. To convert a fraction to its decimal equivalent, divide the denominator by the numerator. True or false?
7. To find the full number when a percentage is known, divide the known number by the known percentage and multiply by 100. True or false?
8. Describe how you would find the amount of increase of one number over another.
9. Fill in the common fraction and percent figures for the following decimal fractions
|Decimal fraction |Common fraction |Percent equivalent |
|a) 0.125 |____________________ |____________________ |
|b) 0.333 |____________________ |____________________ |
|c) 0.75 |____________________ |____________________ |
|d) 0.40 |____________________ |____________________ |
|e) 0.875 |____________________ |____________________ |
10. What is the order of calculation when totalling an invoice with a trade discount?
11. Define the term commission.
12. Give an example of a chain discount.
13. Describe how you convert Canadian dollars to Japanese yen.
14. What is the formula for calculating the principal when you know the interest amount, interest rate, and term?
15. The amortization period of a mortgage is defined as the time it takes to pay the present term of the mortgage. True or false?
16. If you take out a mortgage of $100 000 for 25 years at 8% interest, the monthly payment is $771.82. How would you calculate the total amount of money you will pay back over the life of the mortgage?
17. In a retail business, markup is related to cost price and margin is related to selling price. True or false?
18. What is a break-even point?
19. Describe the difference between a simple average and weighted average.
20. The median of a series of numbers is another term for average. True or false?
Note: Activities, calculations, and questions related to Unit 13 of the Pitman Office Handbook are incorporated into the other units of the Workbook.
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