1644 Times (1644×) Multiplication Table
1644 times table, 1 to 20
| 1644 × 1 | 1,644 |
| 1644 × 2 | 3,288 |
| 1644 × 3 | 4,932 |
| 1644 × 4 | 6,576 |
| 1644 × 5 | 8,220 |
| 1644 × 6 | 9,864 |
| 1644 × 7 | 11,508 |
| 1644 × 8 | 13,152 |
| 1644 × 9 | 14,796 |
| 1644 × 10 | 16,440 |
| 1644 × 11 | 18,084 |
| 1644 × 12 | 19,728 |
| 1644 × 13 | 21,372 |
| 1644 × 14 | 23,016 |
| 1644 × 15 | 24,660 |
| 1644 × 16 | 26,304 |
| 1644 × 17 | 27,948 |
| 1644 × 18 | 29,592 |
| 1644 × 19 | 31,236 |
| 1644 × 20 | 32,880 |
Patterns that help you remember it
- The last digits repeat in a cycle of 5: 4, 8, 2, 6, 0.
- Every answer is even, because 1644 is even.
- Split it into tens and ones: 1644 × k = 1640 × k + 4 × k.
- Each answer is 1644 more than the one before, so you can count on in steps of 1644.
Building it from tables you already know
Every answer in the 1644 times table is double the answer in the 822 times table: 822 × 6 = 4,932, so 1644 × 6 = 9,864. To multiply 1644 by 9, multiply by 10 and take one 1644 away: 16,440 − 1644 = 14,796. To multiply by 11, multiply by 10 and add one more 1644: 16,440 + 1644 = 18,084. Multiplying by 4 is doubling twice: 1644 → 3,288 → 6,576.
Every multiple of 1644 is at least 1644, so there are none below 100 and 0 below 1,000. A number is in the 1644 times table exactly when it divides by 1644 with no remainder.
Odd, even and the last digit
Because 1644 is even, every answer in its table is even, which is a quick way to catch a wrong answer. Multiplying by 10 always puts a zero on the end: 1644 × 10 = 16,440, and 1644 × 100 = 164,400. Multiplying by 5 is half of multiplying by 10: half of 16,440 is 8,220.
Using the 1644 times table to divide
Every fact also works backwards: because 1644 × 7 = 11,508, you know 11,508 ÷ 1644 = 7 and 11,508 ÷ 7 = 1644. Practising the table and its division facts together halves the work.
1644 times table practice worksheet
- 1644 × 12 = ______
- 1644 × 5 = ______
- 1644 × 8 = ______
- 1644 × 12 = ______
- 1644 × 12 = ______
- 1644 × 9 = ______
- 1644 × 6 = ______
- 1644 × 5 = ______
- 1644 × 8 = ______
- 1644 × 8 = ______
- 1644 × 3 = ______
- 1644 × 1 = ______
Answer key
- 19,728
- 8,220
- 13,152
- 19,728
- 19,728
- 14,796
- 9,864
- 8,220
- 13,152
- 13,152
- 4,932
- 1,644
Word problems
Times tables are most useful when you can spot them in a question. Try these, then open each one to check:
- A box holds 1644 pencils. How many pencils are in 5 boxes?
Answer
5 × 1644 = 8,220 pencils. - Tickets cost $1644 each. How much do 6 tickets cost?
Answer
6 × $1644 = $9,864. - 14,796 chairs are set out in rows of 1644. How many rows are there?
Answer
14,796 ÷ 1644 = 9 rows. - A plant grows 1644 millimetres a week. How much does it grow in 10 weeks?
Answer
10 × 1644 = 16,440 millimetres.
Questions
What is 1644 × 12?
19,728.
What is half of 1644 × 8?
1644 × 8 = 13,152, and half of that is 6,576, which is 1644 × 4. Halving one factor halves the answer.
What is 1644 times 0?
0. Any number multiplied by zero is zero, because zero groups of 1644 contain nothing.
What is 1644 × 7 and 1644 × 8?
1644 × 7 = 11,508 and 1644 × 8 = 13,152. These two are the facts most people find hardest, so they are worth practising on their own.
Is 24,660 in the 1644 times table?
Yes: 24,660 ÷ 1644 = 15 with no remainder. 24,661 is not, because dividing it by 1644 leaves a remainder of 1.
How do I learn the 1644 times table quickly?
Learn it in order first, then use the patterns above and practise mixed questions; a few minutes a day works better than one long session.