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# 18 Times Table – Explanation & Examples

**18 times table **is an important table in solving mathematical problems related to fractions, division, L.C.M, and H.C.F as numbers 9 and 2 are divisors of 18.

**18 times table is a table that contains the multiples of the number 18.**

Learning and understanding the 18 times table is quite easy. We will provide interesting tips and skills to learn and understand the 18 times table quickly and easily in this topic.

You should refresh the following concepts to understand the material discussed on this topic.

- Basics of addition and multiplication
- Maths table of 1 to 17

## 18 Multiplication Table

The table of 18 can be written as:

- $18 \times 1 = 18$
- $18 \times 2 = 36$
- $18 \times 3 = 54$
- $18 \times 4 =72$
- $18 \times 5 =90$
- $18 \times 6 =108$
- $18 \times 7 = 126$
- $18 \times 8 = 144$
- $18 \times 9 = 162$
- $18 \times 10 = 180$

### Different Tips for 18 Times Table:

18 times table is easy to understand and memorize if you know the tips and tricks. Let us look at some simple tips which can help you memorize the 18 times table.

**Digits Pattern:** This is one of the easiest methods to help you memorize the 18 times table. Initially, you may find it to be a bit tedious, but once you get the hang of it, you will learn the 18 times table in no time. First of all, draw a 2 x 5 table and then write the digit pattern of 8, 6, 4, 2, and 0 in the first and second row, as shown in the picture below.

Once you have written the above pattern, place the first 5 odd digits in sequence from left to right before the digits 8, 6, 4, 2, and 0 in the first row. After that, place 5 even numbers starting from number 10 to 18 in the second row from left to right in the same sequence as in the first row. The detailed method is presented in the picture below.

**Using 9 times table: **The 9 times table can be used to learn and memorize the 18 times table. This method will also help you in the revision of the 9 times table. First of all, you have to write the 9 times table and then just double the value of all the multiples; the resulting outcome is the multiples of the number 18. For example, the fifth multiple of the number 9 is 45, and if we double its value $45 + 45 = 90$, we get the fifth multiple of the number 18. The detailed method is presented below.

9 Times Table | Double the Answer | 18 Times Table |

$9\times 1 = {\color{green}9}$ | ${\color{green}9} + {\color{green}9} = {\color{red}18}$ | $18\times 1 = {\color{red}18}$ |

$9\times 2 = {\color{green}18}$ | ${\color{green}18} + {\color{green}18} = {\color{red}36}$ | $18\times 2 = {\color{red}36}$ |

$9\times 3 = {\color{green}27}$ | ${\color{green}27} + {\color{green}27} = {\color{red}54}$ | $18\times 3 = {\color{red}54}$ |

$9\times 4 = {\color{green}36}$ | ${\color{green}36} + {\color{green}36} = {\color{red}72}$ | $18\times 4 = {\color{red}72}$ |

$9\times 5 = {\color{green}45}$ | ${\color{green}45} + {\color{green}45} = {\color{red}90}$ | $18\times 5 = {\color{red}90}$ |

$9\times 6 = {\color{green}54}$ | ${\color{green}54} + {\color{green}54} = {\color{red}108}$ | $18\times 6 = {\color{red}108}$ |

$9\times 7 = {\color{green}63}$ | ${\color{green}63} + {\color{green}63} = {\color{red}126}$ | $18\times 7 = {\color{red}126}$ |

$9\times 8 = {\color{green}72}$ | ${\color{green}72} + {\color{green}72} = {\color{red}144}$ | $18\times 8 = {\color{red}144}$ |

$9\times 9 = {\color{green}81}$ | ${\color{green}81} + {\color{green}81} = {\color{red}162}$ | $18\times 9 = {\color{red}162}$ |

$9\times 10 = {\color{green}90}$ | ${\color{green}90} + {\color{green}90} = {\color{red}180}$ | $18\times 10 = {\color{red}180}$ |

**Using 8 times Table: **This method can also be used to memorize the 18 times table, and it is easy if you have already memorized the 8 times table. The unit’s digit pattern of the 8 times table is the same as the 18 times table. So, the unit’s digit pattern of the 8 times table can be used to learn and memorize the 18 times table. The detailed method is presented in the picture below.

**Using 10 and 8 Times Tables:** This is one of the easiest methods to learn 18 times tables. If you feel all the previous methods are difficult, then you can certainly use this method. This method uses both the 10 and 8 times tables to generate the 18 times table. If you add the same multiple of the number 10 to the same multiple of the number 8, the outcome will be a multiple of the number 18. For example, the sixth multiple of the number 10 is 60, and the sixth multiple of the number 8 is 48, and if we add 60 and 48, we get 108 that is the sixth multiple of the number 18. The detailed method is presented in the table below.

10 Times Table | 8 Times Table | Addition | Outcome |

$10\times 1 = {\color{green}10}$ | $ 8 \times 1 = {\color{red}8}$ | ${\color{green}10}+ {\color{red}8}$ | $18$ |

$10\times 2 = {\color{green}20}$ | $8 \times 2 = {\color{red}16}$ | ${\color{green}20}+ {\color{red}16}$ | $36$ |

$10\times 3 = {\color{green}30}$ | $8 \times 3 = {\color{red}24}$ | ${\color{green}30} + {\color{red}24}$ | $54$ |

$10\times 4 = {\color{green}40}$ | $8 \times 4 = {\color{red}32}$ | ${\color{green}40}+ {\color{red}32}$ | $72$ |

$10\times 5 = {\color{green}50}$ | $8\times 5 = {\color{red}40}$ | ${\color{green}50} +{\color{red}40}$ | $90$ |

$10\times 6 = {\color{green}60}$ | $8\times 6 = {\color{red}48}$ | ${\color{green}60} +{\color{red}48}$ | $108$ |

$10\times 7 = {\color{green}70}$ | $8 \times 7 = {\color{red}56}$ | ${\color{green}70} +{\color{red}56}$ | $126$ |

$10\times 8 = {\color{green}80}$ | $8 \times 8 = {\color{red}64}$ | ${\color{green}80} + {\color{red}64}$ | $144$ |

$10\times 9 = {\color{green}90}$ | $8 \times 9 = {\color{red}72}$ | ${\color{green}90} + {\color{red}72}$ | $162$ |

$10\times 10 = {\color{green}100}$ | $8 \times 10 = {\color{red}80}$ | ${\color{green}100} + {\color{red}80}$ | $180$ |

### Table of 18 from 1 to 20:

A complete table of 18 from 1 to 20 can be written as:

Numerical Representation | Descriptive Representation | Product (Answer) |

$18 \times 1$ | Eighteen times one | $18$ |

$18 \times 2$ | Eighteen times two | $36$ |

$18 \times 3$ | Eighteen times three | $54$ |

$18 \times 4$ | Eighteen times four | $72$ |

$18 \times 5$ | Eighteen times five | $90$ |

$18 \times 6$ | Eighteen times six | $108$ |

$18 \times 7$ | Eighteen times seven | $126$ |

$18 \times 8$ | Eighteen times eight | $144$ |

$18 \times 9$ | Eighteen times nine | $162$ |

$18 \times 10$ | Eighteen times ten | $180$ |

$18 \times 11$ | Eighteen times eleven | $198$ |

$18 \times 12$ | Eighteen times twelve | $216$ |

$18 \times 13$ | Eighteen times thirteen | $234$ |

$18 \times 14$ | Eighteen times fourteen | $252$ |

$18 \times 15$ | Eighteen times fifteen | $270$ |

$18 \times 16$ | Eighteen times sixteen | $288$ |

$18 \times 17$ | Eighteen times seventeen | $306$ |

$18 \times 18$ | Eighteen times eighteen | $324$ |

$18 \times 19$ | Eighteen times nineteen | $342$ |

$18 \times 20$ | Eighteen times twenty | $360$ |

*Example 1**:* Calculate 6 times 3 times 20 minus 170

__Solution:__

6 times 3 times 20 minus 170 can be written as:

$ = (6\times 3 \times 20) – 170$

$ = 18\times 20 – 170$

$ = 360 – 170 $

$ = 190 $

*Example 2**:* Leon runs for 5KM daily. Calculate the distance covered by Leon in 18 days.

__Solution:__

Distance covered by Leon in 18 days can be calculated using 18 times table.

$= 18\times 5 = 90$ KM

*Example 3**:* Calculate 18 times 14 plus 170 minus 20 times 18?

__Solution:__

18 times 14 plus 170 minus 20 times 18 can be written as:

$ = (18\times 14) +170 – (20\times 18)$

$ = (252) +170 – (20\times 18)$

$ = 422 – 360$

$ = 62$

*Example 4**:* Donald works at a gas station and earns 18 dollars a day. Calculate the total money earned by Donald

- If he works for 10 days
- If he works for 13 days.
- If he works for 18 days.

__Solution:__

- We can calculate the total money earned by Donald in 10 days by using 18 times table. $18\times 10 = 180$ dollars
- We can calculate the total money earned by Donald in 13 days by using 18 times table. $18\times 13 = 234$ dollars
- We can calculate the total money earned by Donald in 18 days by using 18 times table. $18\times 18 = 324$ dollars

### Practice Questions:

- Subtract the sum of the first 7 even multiples of the number 18 from the first 7 odd multiples of the number 18.
- Calculate 18 times 19 times 10 minus 2000?
- From the given table, select the numbers which are multiples of 18

181 | 137 | 18 | 160 | 50 | 151 | 61 | 180 |

225 | 19 | 30 | 18 | 10 | 306 | 67 | 154 |

36 | 111 | 13 | 17 | 100 | 203 | 99 | 321 |

15 | 230 | 14 | 16 | 324 | 104 | 33 | 129 |

210 | 295 | 200 | 25 | 21 | 87 | 41 | 210 |

252 | 14 | 55 | 219 | 70 | 88 | 29 | 220 |

140 | 32 | 39 | 34 | 342 | 69 | 167 | 219 |

109 | 120 | 360 | 39 | 80 | 100 | 350 | 234 |

41 | 65 | 43 | 51 | 45 | 122 | 216 | 257 |

44 | 53 | 54 | 49 | 80 | 132 | 215 | 90 |

### Answer Key:

1). We know the first 7 odd Multiples of 18: 18, 54, 90, 126, 162, 198, and 234.

The first 7 even Multiples of 18 are 36, 72, 108, 144, 180, 216, and 252.

Sum of all the first 7 multiples of the number 18 is $= 18 + 54+ 90+ 126+ 162+ 198+ 234 = 882$.

The Sum of the first 7 even multiples of the number 18 is $= 36+ 72+ 108+ 144+ 180+ 216+ 252 = 1008 $.

The difference between the sum of even and odd multiples is $= 1008 – 882 = 126$.

2). 18 times 19 times 10 minus 2000 can be written as:

$ = (18\times 19\times 10) – 2000$

$ = (342 \times 10) -2000$

$ = 3420 – 2000$

$ = 1420$

3).

181 | 137 | 18 | 160 | 50 | 151 | 61 | 180 |

225 | 19 | 30 | 18 | 10 | 306 | 67 | 154 |

36 | 111 | 13 | 17 | 100 | 203 | 99 | 321 |

15 | 230 | 14 | 16 | 324 | 104 | 33 | 129 |

210 | 295 | 200 | 25 | 21 | 87 | 41 | 210 |

252 | 14 | 55 | 219 | 70 | 88 | 29 | 220 |

140 | 32 | 39 | 34 | 342 | 69 | 167 | 219 |

109 | 120 | 360 | 39 | 80 | 100 | 350 | 234 |

41 | 65 | 43 | 51 | 45 | 122 | 216 | 257 |

44 | 53 | 54 | 49 | 80 | 132 | 215 | 90 |