Sumwise

1643 Times (1643×) Multiplication Table

1643 times table, 1 to 20

1643 × 11,643
1643 × 23,286
1643 × 34,929
1643 × 46,572
1643 × 58,215
1643 × 69,858
1643 × 711,501
1643 × 813,144
1643 × 914,787
1643 × 1016,430
1643 × 1118,073
1643 × 1219,716
1643 × 1321,359
1643 × 1423,002
1643 × 1524,645
1643 × 1626,288
1643 × 1727,931
1643 × 1829,574
1643 × 1931,217
1643 × 2032,860

Patterns that help you remember it

  • The last digits repeat in a cycle of 10: 3, 6, 9, 2, 5, 8, 1, 4, 7, 0.
  • Split it into tens and ones: 1643 × k = 1640 × k + 3 × k.
  • Each answer is 1643 more than the one before, so you can count on in steps of 1643.

Building it from tables you already know

To multiply 1643 by 9, multiply by 10 and take one 1643 away: 16,430 − 1643 = 14,787. To multiply by 11, multiply by 10 and add one more 1643: 16,430 + 1643 = 18,073. Multiplying by 4 is doubling twice: 1643 → 3,286 → 6,572.

Every multiple of 1643 is at least 1643, so there are none below 100 and 0 below 1,000. A number is in the 1643 times table exactly when it divides by 1643 with no remainder.

Odd, even and the last digit

Because 1643 is odd, the answers alternate between odd and even: 1643 × 1 = 1643 is odd, 1643 × 2 = 3,286 is even, and so on. Multiplying by 10 always puts a zero on the end: 1643 × 10 = 16,430, and 1643 × 100 = 164,300. Multiplying by 5 is half of multiplying by 10: half of 16,430 is 8,215.

Using the 1643 times table to divide

Every fact also works backwards: because 1643 × 7 = 11,501, you know 11,501 ÷ 1643 = 7 and 11,501 ÷ 7 = 1643. Practising the table and its division facts together halves the work.

1643 times table practice worksheet

  1. 1643 × 12 = ______
  2. 1643 × 12 = ______
  3. 1643 × 5 = ______
  4. 1643 × 6 = ______
  5. 1643 × 8 = ______
  6. 1643 × 12 = ______
  7. 1643 × 8 = ______
  8. 1643 × 12 = ______
  9. 1643 × 11 = ______
  10. 1643 × 8 = ______
  11. 1643 × 4 = ______
  12. 1643 × 7 = ______
Answer key
  1. 19,716
  2. 19,716
  3. 8,215
  4. 9,858
  5. 13,144
  6. 19,716
  7. 13,144
  8. 19,716
  9. 18,073
  10. 13,144
  11. 6,572
  12. 11,501

Word problems

Times tables are most useful when you can spot them in a question. Try these, then open each one to check:

  1. A box holds 1643 pencils. How many pencils are in 5 boxes?
    Answer5 × 1643 = 8,215 pencils.
  2. Tickets cost $1643 each. How much do 6 tickets cost?
    Answer6 × $1643 = $9,858.
  3. 9,858 chairs are set out in rows of 1643. How many rows are there?
    Answer9,858 ÷ 1643 = 6 rows.
  4. A plant grows 1643 millimetres a week. How much does it grow in 7 weeks?
    Answer7 × 1643 = 11,501 millimetres.

About this page

The table, the patterns and the practice questions are all calculated for 1643 when the page is opened, so every fact on it is exact. Use the options above the worksheet to change the number of questions or the largest multiplier.

Questions

What is 1643 × 12?

19,716.

What is half of 1643 × 8?

1643 × 8 = 13,144, and half of that is 6,572, which is 1643 × 4. Halving one factor halves the answer.

What is 1643 times 0?

0. Any number multiplied by zero is zero, because zero groups of 1643 contain nothing.

What is 1643 × 7 and 1643 × 8?

1643 × 7 = 11,501 and 1643 × 8 = 13,144. These two are the facts most people find hardest, so they are worth practising on their own.

Is 24,645 in the 1643 times table?

Yes: 24,645 ÷ 1643 = 15 with no remainder. 24,646 is not, because dividing it by 1643 leaves a remainder of 1.

How do I learn the 1643 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.