How it works
This 10x10 multiplication chart holds every fact from 1 × 1 to 10 × 10 in 100 squares, with the 10 row and column marked. Tap a square to light its answer, or press New practice chart to hide 50 answers.
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What a 10 by 10 multiplication chart holds, and what it leaves out
The 100 squares hold only 42 different answers, because most repeat: 3 × 7 and 7 × 3 are both 21. So 58 of the numbers from 1 to 100 never appear, among them every prime from 11 to 97. Each square is 1 percent of the chart: 25 hold an odd answer, so 25 percent.
Why a multiplication chart 1 to 10 fits Grade 3
Common Core asks Grade 3 pupils to multiply and divide within 100, and this chart stops at 100; the 12 by 12 chart runs to 144. The same grade multiplies one-digit numbers by multiples of 10, such as 9 × 80. The marked 10 row shows how: 9 × 8 = 72, so 9 × 80 = 720.
- Tap any 40 and 4 squares light up, since 5 × 8 makes 40 too.
- Press Print the chart for one portrait page, Letter or A4. With answers hidden, an answer key prints as page 2.
- All 100 answers add up to 3,025, which is 55 × 55. 55 is 1 + 2 + 3 and on to 10.
Questions and answers
How many squares are on a 10 x 10 multiplication chart?
100: 10 rows of 10. They hold 55 facts if 3 × 7 and 7 × 3 count once, and 36 without the 1 row and the 10 row. Six answers sit in 1 square only: 1, 25, 49, 64, 81 and 100, all on the diagonal.
Should I use a multiplication chart 10x10 or 12x12?
Follow your class. England's national curriculum lists tables up to 12 × 12 for Year 4, so pupils there need the 1 to 12 chart. It keeps these 100 squares and adds 44 more in the 11 and 12 rows and columns.
Why does every answer in the 10 row end in 0?
Multiplying by 10 moves each digit one place to the left, and a 0 fills the empty ones place. So 7 becomes 70 and 10 becomes 100. On this 1-10 multiplication chart 27 of the 100 squares hold an answer ending in 0.