How fast can you recall the 21 times table? Pick a level, answer ten questions on the keypad and get your score and time straight away. Your best time is saved on this device, so every round is a chance to beat it.

Easy Medium Hard

21 × up to 15, plus a few division questions such as 147 ÷ 21.

Start 10 questions

The multiples of 21 start 21, 42, 63, 84, 105 and 126. Once you can say the table up to 21 × 10 without stopping, the chart and tricks below show how to reach 21 × 12, 21 × 15 and beyond, which is where Medium and Hard levels take you.

21 times table chart (21 × 1 to 21 × 20)

How to learn the 21 times table

• Split 21 into 20 and 1: 21 × k = (20 × k) + (1 × k). For example, 21 × 7 = 140 + 7 = 147.
• 21 is 1 more than 20, so 21 × 8 = 20 × 8 + 1 × 8 = 160 + 8 = 168.
• The units digit of the answers repeats every ten steps: 1, 2, 3, 4, 5, 6, 7, 8, 9, 0. If your answer ends in anything else, check it again.

Frequently asked questions

What is the 21 times table?

21 × 1 = 21, 21 × 2 = 42, 21 × 3 = 63, 21 × 4 = 84, 21 × 5 = 105, 21 × 6 = 126, 21 × 7 = 147, 21 × 8 = 168, 21 × 9 = 189, 21 × 10 = 210, 21 × 11 = 231, 21 × 12 = 252.

What is 21 × 15 and 21 × 20?

21 × 15 = 315 and 21 × 20 = 420.

How do I learn the 21 times table quickly?

Split 21 into 20 and 1: 21 × k = (20 × k) + (1 × k). For example, 21 × 7 = 140 + 7 = 147. 21 is 1 more than 20, so 21 × 8 = 20 × 8 + 1 × 8 = 160 + 8 = 168.

What is 252 ÷ 21?

252 ÷ 21 = 12, because 21 × 12 = 252. Division is multiplication in reverse, and the Medium and Hard levels mix questions like this in.

How is the speed maths test scored?

Each test has 10 questions. Answer 8 or more correctly to pass. Your time is recorded for the whole test, and your best time for each test and level is saved on your own device, so you can try to beat it.

More speed maths tests

• 20 Times Table Test
• 22 Times Table Test
• 12 Times Table Test
• Squares 1 to 50 Test
• Mental Multiplication Test
• All speed maths tests
• Times tables chart and tests (2 to 30)