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A multiplication table known as the “Table of 87” produces the sum of a series of natural numbers plus the number 87. For instance, multiplying 87 by two results in 174, multiplying 87 by three results in 261, and vice versa.
Table of 87 up to 10
| 87 × 1 = 87 | 87 × 6 = 522 |
| 87 × 2 = 174 | 87 × 7 = 609 |
| 87 × 3 = 261 | 87 × 8 = 696 |
| 87 × 4 = 348 | 87 × 9 = 783 |
| 87 × 5 = 435 | 87 × 10 = 870 |
Table of 87 up to 20
| 87 × 11 = 957 | 87 × 16 = 1392 |
| 87 × 12 = 1044 | 87 × 17 = 1479 |
| 87 × 13 = 1131 | 87 × 18 = 1566 |
| 87 × 14 = 1218 | 87 × 19 = 1653 |
| 87 × 15 = 1305 | 87 × 20 = 1740 |
Tips for Memorising a Table of 87
- The ideal strategy is to have the children repeat it daily until they have learned it by heart.
- The difference between two successive multiples in the 87 multiplication table equals 87, it is possible to calculate the table using the difference between two consecutive products. Students can therefore get the whole multiples by adding 87 to the previous figure.
Solved Examples
1. Every day, a customer purchases 4 bananas. In 87 days, how many bananas will the customer purchase?
Solution: Each day, the consumer purchases 4 bananas. As a result, using the table of 87, the buyer purchased a total of 4 x 87 = 348 bananas over 87 days.
2. Every day, Paul jogs two miles. Find out how far he jogs in 87 days using the table of 87.
Solution: Every day, Paul jogs two miles. Thus, 2 x 87 = 174 miles have been covered overall after 87 days.
3. Ankita’s hourly wage is $20. How much money will she make working 87 hours per week?
Solution: Ankita’s hourly wage is $20. Consequently, using the 87-hour chart, Ankita earned 20 x 87 = $1740 after 87 hours.
