The 2 times table
Times 2 means doubling: add the number to itself. Every answer is even, so it ends in 0, 2, 4, 6 or 8.
Example: 2 × 8 = 8 + 8 = 16.
A shortcut for each table, easiest first. Every example is worked through so you can check it.
Times 2 means doubling: add the number to itself. Every answer is even, so it ends in 0, 2, 4, 6 or 8.
Example: 2 × 8 = 8 + 8 = 16.
Answers end in 5 or 0. Multiply by 10 and take half; on a clock face the 5s are the minutes.
Example: 5 × 8 = half of 80 = 40.
Write the number and add a zero on the end.
Example: 10 × 7 = 70.
Ten times, then take one away. Or use your fingers: hold up ten fingers and fold down finger number n. Fingers to the left are tens, fingers to the right are ones. The digits of each answer (up to 9 × 10) add up to 9.
Example: 9 × 7 = 70 − 7 = 63; fold finger 4 for 9 × 4 → 3 and 6 → 36.
For 1 to 9, write the digit twice. For a two-digit number whose digits add to less than 10, split the digits and put their sum in the middle.
Example: 11 × 4 = 44; 11 × 12 → 1 (1+2) 2 = 132.
Double the number, then add it once more. The digits of every answer add up to 3, 6 or 9.
Example: 3 × 7 = 14 + 7 = 21.
Double, then double again.
Example: 4 × 6: double 6 is 12, double 12 is 24.
Take the 5s answer and add one more of the number. With an even number, the answer ends in that same digit (6 × 4 = 24, 6 × 8 = 48).
Example: 6 × 7 = 35 + 7 = 42.
Double three times.
Example: 8 × 7: 7 → 14 → 28 → 56.
Ten times plus two times.
Example: 12 × 7 = 70 + 14 = 84.
You already know most 7s from other tables because 7 × 3 is the same as 3 × 7. The new ones are 7 × 7 = 49, 7 × 8 = 56 (think "5, 6, 7, 8": 56 = 7 × 8) and 7 × 9 = 63. Or split 7 into 5 + 2.
Example: 7 × 6 = (5 × 6) + (2 × 6) = 30 + 12 = 42.
Bigger tables are built from smaller ones. The 15s are the 10s plus the 5s. The 19s are the 20s minus one. The 25s work like quarters. Each times table page has its own trick.
Turn-arounds. Because 3 × 8 = 8 × 3, every fact you learn gives you a second one free. Learn the 1s, 2s, 5s and 10s first and a large part of the 12 × 12 chart is already done.
Multiply by 10 and take away the number once: 9 × 7 = 70 − 7 = 63. Or use your fingers: hold up ten fingers, fold down the 7th, and read 6 fingers on the left and 3 on the right: 63.
Split 7 into 5 + 2: 7 × 6 = 30 + 12 = 42. And remember 56 = 7 × 8 with the sequence 5, 6, 7, 8.
Build them from facts you know. 6 × 8 is double 3 × 8 (24), so 48. 7 × 8 is one more 8 than 6 × 8, so 56. Doubling and "one more group" turn hard facts into easy steps.