Sumwise

641 Times (641×) Multiplication Table

641 times table, 1 to 20

641 × 1641
641 × 21,282
641 × 31,923
641 × 42,564
641 × 53,205
641 × 63,846
641 × 74,487
641 × 85,128
641 × 95,769
641 × 106,410
641 × 117,051
641 × 127,692
641 × 138,333
641 × 148,974
641 × 159,615
641 × 1610,256
641 × 1710,897
641 × 1811,538
641 × 1912,179
641 × 2012,820

Patterns that help you remember it

  • The last digits repeat in a cycle of 10: 1, 2, 3, 4, 5, 6, 7, 8, 9, 0.
  • Split it into tens and ones: 641 × k = 640 × k + 1 × k.
  • Each answer is 641 more than the one before, so you can count on in steps of 641.

Building it from tables you already know

To multiply 641 by 9, multiply by 10 and take one 641 away: 6,410 − 641 = 5,769. To multiply by 11, multiply by 10 and add one more 641: 6,410 + 641 = 7,051. Multiplying by 4 is doubling twice: 641 → 1,282 → 2,564.

Every multiple of 641 is at least 641, so there are none below 100 and 1 below 1,000. A number is in the 641 times table exactly when it divides by 641 with no remainder.

Odd, even and the last digit

Because 641 is odd, the answers alternate between odd and even: 641 × 1 = 641 is odd, 641 × 2 = 1,282 is even, and so on. Multiplying by 10 always puts a zero on the end: 641 × 10 = 6,410, and 641 × 100 = 64,100. Multiplying by 5 is half of multiplying by 10: half of 6,410 is 3,205.

Using the 641 times table to divide

Every fact also works backwards: because 641 × 7 = 4,487, you know 4,487 ÷ 641 = 7 and 4,487 ÷ 7 = 641. Practising the table and its division facts together halves the work.

641 times table practice worksheet

  1. 641 × 11 = ______
  2. 641 × 6 = ______
  3. 641 × 4 = ______
  4. 641 × 12 = ______
  5. 641 × 5 = ______
  6. 641 × 9 = ______
  7. 641 × 8 = ______
  8. 641 × 2 = ______
  9. 641 × 9 = ______
  10. 641 × 4 = ______
  11. 641 × 7 = ______
  12. 641 × 4 = ______
Answer key
  1. 7,051
  2. 3,846
  3. 2,564
  4. 7,692
  5. 3,205
  6. 5,769
  7. 5,128
  8. 1,282
  9. 5,769
  10. 2,564
  11. 4,487
  12. 2,564

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 641 pencils. How many pencils are in 3 boxes?
    Answer3 × 641 = 1,923 pencils.
  2. Tickets cost $641 each. How much do 6 tickets cost?
    Answer6 × $641 = $3,846.
  3. 1,923 chairs are set out in rows of 641. How many rows are there?
    Answer1,923 ÷ 641 = 3 rows.
  4. A plant grows 641 millimetres a week. How much does it grow in 8 weeks?
    Answer8 × 641 = 5,128 millimetres.

About this page

The table, the patterns and the practice questions are all calculated for 641 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 641 × 12?

7,692.

What is half of 641 × 8?

641 × 8 = 5,128, and half of that is 2,564, which is 641 × 4. Halving one factor halves the answer.

What is 641 times 0?

0. Any number multiplied by zero is zero, because zero groups of 641 contain nothing.

What is 641 × 7 and 641 × 8?

641 × 7 = 4,487 and 641 × 8 = 5,128. These two are the facts most people find hardest, so they are worth practising on their own.

Is 9,615 in the 641 times table?

Yes: 9,615 ÷ 641 = 15 with no remainder. 9,616 is not, because dividing it by 641 leaves a remainder of 1.

How do I learn the 641 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.