Sumwise

665 Times (665×) Multiplication Table

665 times table, 1 to 20

665 × 1665
665 × 21,330
665 × 31,995
665 × 42,660
665 × 53,325
665 × 63,990
665 × 74,655
665 × 85,320
665 × 95,985
665 × 106,650
665 × 117,315
665 × 127,980
665 × 138,645
665 × 149,310
665 × 159,975
665 × 1610,640
665 × 1711,305
665 × 1811,970
665 × 1912,635
665 × 2013,300

Patterns that help you remember it

  • The last digits repeat in a cycle of 2: 5, 0.
  • Every answer ends in 0 or 5.
  • Split it into tens and ones: 665 × k = 660 × k + 5 × k.
  • Each answer is 665 more than the one before, so you can count on in steps of 665.

Building it from tables you already know

To multiply 665 by 9, multiply by 10 and take one 665 away: 6,650 − 665 = 5,985. To multiply by 11, multiply by 10 and add one more 665: 6,650 + 665 = 7,315. Multiplying by 4 is doubling twice: 665 → 1,330 → 2,660.

Every multiple of 665 is at least 665, so there are none below 100 and 1 below 1,000. A number is in the 665 times table exactly when it divides by 665 with no remainder.

Odd, even and the last digit

Because 665 is odd, the answers alternate between odd and even: 665 × 1 = 665 is odd, 665 × 2 = 1,330 is even, and so on. Multiplying by 10 always puts a zero on the end: 665 × 10 = 6,650, and 665 × 100 = 66,500. Multiplying by 5 is half of multiplying by 10: half of 6,650 is 3,325.

Using the 665 times table to divide

Every fact also works backwards: because 665 × 7 = 4,655, you know 4,655 ÷ 665 = 7 and 4,655 ÷ 7 = 665. Practising the table and its division facts together halves the work.

665 times table practice worksheet

  1. 665 × 12 = ______
  2. 665 × 8 = ______
  3. 665 × 6 = ______
  4. 665 × 11 = ______
  5. 665 × 8 = ______
  6. 665 × 9 = ______
  7. 665 × 10 = ______
  8. 665 × 3 = ______
  9. 665 × 7 = ______
  10. 665 × 10 = ______
  11. 665 × 9 = ______
  12. 665 × 2 = ______
Answer key
  1. 7,980
  2. 5,320
  3. 3,990
  4. 7,315
  5. 5,320
  6. 5,985
  7. 6,650
  8. 1,995
  9. 4,655
  10. 6,650
  11. 5,985
  12. 1,330

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 665 pencils. How many pencils are in 6 boxes?
    Answer6 × 665 = 3,990 pencils.
  2. Tickets cost $665 each. How much do 8 tickets cost?
    Answer8 × $665 = $5,320.
  3. 1,330 chairs are set out in rows of 665. How many rows are there?
    Answer1,330 ÷ 665 = 2 rows.
  4. A plant grows 665 millimetres a week. How much does it grow in 10 weeks?
    Answer10 × 665 = 6,650 millimetres.

About this page

The table, the patterns and the practice questions are all calculated for 665 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 665 × 12?

7,980.

What is half of 665 × 8?

665 × 8 = 5,320, and half of that is 2,660, which is 665 × 4. Halving one factor halves the answer.

What is 665 times 0?

0. Any number multiplied by zero is zero, because zero groups of 665 contain nothing.

What is 665 × 7 and 665 × 8?

665 × 7 = 4,655 and 665 × 8 = 5,320. These two are the facts most people find hardest, so they are worth practising on their own.

Is 9,975 in the 665 times table?

Yes: 9,975 ÷ 665 = 15 with no remainder. 9,976 is not, because dividing it by 665 leaves a remainder of 1.

How do I learn the 665 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.