Times tables, 1 to 20.
Choose a table. Each page has the full table, a twelve-question quiz, a printable worksheet with an answer key, and the patterns that make that particular table easier.
1 times table
Every answer is the number you started with. The useful part is knowing why, and where multiplying by 1 turns up later.
2 times table
The 2 times table is doubling. Get quick at doubles and you have a head start on the 4 and 8 times tables too.
3 times table
Count in threes, then check yourself with a pattern: the digits of every answer add up to 3, 6 or 9.
4 times table
Double, then double again. The 4 times table is the 2 times table done twice.
5 times table
Every answer ends in 5 or 0, and each one is half of a number in the 10 times table.
6 times table
The 6 times table is the 3 times table doubled, with a neat pattern hiding in the even answers.
7 times table
There is no shortcut pattern for sevens, but only a couple of the facts are ones you have not already met in other tables.
8 times table
Double three times. The 8 times table is the 4 times table doubled, and its last digits count down in twos.
9 times table
The table with the most patterns: the digits of each answer add up to 9, and the tens digit is one less than the number you multiplied by.
10 times table
Each digit moves one place to the left. That idea, more than “add a zero”, is what makes the 10 times table the base of everything else.
11 times table
Easy up to 9, where the digit simply repeats. Beyond that, a split-and-add trick takes over.
12 times table
Ten times plus two times. The 12 times table counts in dozens: months, hours, inches and eggs.
13 times table
The first table past the usual chart. Split 13 into 10 and 3 and it is no harder than the ones before it.
14 times table
Double the 7 times table. Fourteen days is two weeks, so this is also the table of fortnights.
15 times table
Quarter hours. The 15 times table is ten times, plus half as much again.
16 times table
Double four times. Sixteen is a power of two, so this table is the 8 times table doubled.
17 times table
A prime number with no doubling shortcut. Use ten lots plus seven lots, or twenty lots minus three.
18 times table
Double the 9 times table, or twenty lots minus two. The digits of every answer still add up to a multiple of 9.
19 times table
One less than twenty. Multiply by 20 and subtract the number once, and watch the ones digits count down.
20 times table
Double the number and move it one place. The 20 times table is the 2 times table with a zero on the end.
Which tables to learn first
The tables are not equally hard, and they are easier in a sensible order. Start with 10, 5 and 2, which have the clearest patterns. Add 4 and 8, which are doublings of the 2 times table, then 3, 6 and 9. That leaves very little of the 7 times table that you have not already met from the other side.
The tables from 13 to 20 are not usually memorised. Each one can be built from a table you already know: 14 is double the sevens, 15 is ten lots plus half as many again, 19 is twenty lots minus one. The individual pages show the method for each.
In the UK these are called times tables and the subject is maths; in the US you will also hear multiplication tables or multiplication facts. They are the same thing.