Sumwise

642 Times (642×) Multiplication Table

642 times table, 1 to 20

642 × 1642
642 × 21,284
642 × 31,926
642 × 42,568
642 × 53,210
642 × 63,852
642 × 74,494
642 × 85,136
642 × 95,778
642 × 106,420
642 × 117,062
642 × 127,704
642 × 138,346
642 × 148,988
642 × 159,630
642 × 1610,272
642 × 1710,914
642 × 1811,556
642 × 1912,198
642 × 2012,840

Patterns that help you remember it

  • The last digits repeat in a cycle of 5: 2, 4, 6, 8, 0.
  • Every answer is even, because 642 is even.
  • Split it into tens and ones: 642 × k = 640 × k + 2 × k.
  • Each answer is 642 more than the one before, so you can count on in steps of 642.

Building it from tables you already know

Every answer in the 642 times table is double the answer in the 321 times table: 321 × 6 = 1,926, so 642 × 6 = 3,852. To multiply 642 by 9, multiply by 10 and take one 642 away: 6,420 − 642 = 5,778. To multiply by 11, multiply by 10 and add one more 642: 6,420 + 642 = 7,062. Multiplying by 4 is doubling twice: 642 → 1,284 → 2,568.

Every multiple of 642 is at least 642, so there are none below 100 and 1 below 1,000. A number is in the 642 times table exactly when it divides by 642 with no remainder.

Odd, even and the last digit

Because 642 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: 642 × 10 = 6,420, and 642 × 100 = 64,200. Multiplying by 5 is half of multiplying by 10: half of 6,420 is 3,210.

Using the 642 times table to divide

Every fact also works backwards: because 642 × 7 = 4,494, you know 4,494 ÷ 642 = 7 and 4,494 ÷ 7 = 642. Practising the table and its division facts together halves the work.

642 times table practice worksheet

  1. 642 × 10 = ______
  2. 642 × 12 = ______
  3. 642 × 10 = ______
  4. 642 × 9 = ______
  5. 642 × 10 = ______
  6. 642 × 7 = ______
  7. 642 × 9 = ______
  8. 642 × 11 = ______
  9. 642 × 8 = ______
  10. 642 × 9 = ______
  11. 642 × 10 = ______
  12. 642 × 4 = ______
Answer key
  1. 6,420
  2. 7,704
  3. 6,420
  4. 5,778
  5. 6,420
  6. 4,494
  7. 5,778
  8. 7,062
  9. 5,136
  10. 5,778
  11. 6,420
  12. 2,568

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 642 pencils. How many pencils are in 3 boxes?
    Answer3 × 642 = 1,926 pencils.
  2. Tickets cost $642 each. How much do 7 tickets cost?
    Answer7 × $642 = $4,494.
  3. 3,852 chairs are set out in rows of 642. How many rows are there?
    Answer3,852 ÷ 642 = 6 rows.
  4. A plant grows 642 millimetres a week. How much does it grow in 12 weeks?
    Answer12 × 642 = 7,704 millimetres.

About this page

The table, the patterns and the practice questions are all calculated for 642 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 642 × 12?

7,704.

What is half of 642 × 8?

642 × 8 = 5,136, and half of that is 2,568, which is 642 × 4. Halving one factor halves the answer.

What is 642 times 0?

0. Any number multiplied by zero is zero, because zero groups of 642 contain nothing.

What is 642 × 7 and 642 × 8?

642 × 7 = 4,494 and 642 × 8 = 5,136. These two are the facts most people find hardest, so they are worth practising on their own.

Is 9,630 in the 642 times table?

Yes: 9,630 ÷ 642 = 15 with no remainder. 9,631 is not, because dividing it by 642 leaves a remainder of 1.

How do I learn the 642 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.