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The 09 Times Table
9 x 2 = 18.

The 09 Times Table

Conquer the 9 times table. Use patterns, digit-sum divisibility, and smart mental methods to solve KS3 questions confidently and fast.

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Fascinating Fact:

The Sun’s diameter (1.39 million km) is about nine times greater than that of Jupiter (139 820 km).

In KS3 Maths Times Tables, the 9 times table rewards pattern-spotting. Think 9n as (10n − n), use skip-counting (9, 18, 27…), and check results with the digit-sum rule for 9 to build speed and accuracy.

  • Multiple: A result in a times table; for 9 it’s 9, 18, 27, 36, 45, …
  • Factor: A whole number that divides another exactly; 9 is a factor of 81 because 81 ÷ 9 = 9.
  • Divisibility rule for 9: A number is divisible by 9 if the sum of its digits is a multiple of 9.

Sharpen recall with this quick game: https://www.educationquizzes.com/multiplication-game/

What is the trick for the 9 times table?

Use 10n − n. For example, 9 × 7 = 70 − 7 = 63. You can also spot the pattern: products rise by 9 each time and the digits often sum to 9.

How do I check if a number is divisible by 9?

Add its digits. If the total is a multiple of 9, the whole number is divisible by 9. Example: 4 + 5 + 0 = 9 so 450 is divisible by 9.

How can I multiply bigger numbers by 9 in my head?

Break the number apart: 9 × 34 = 9 × (30 + 4) = 270 + 36 = 306. This uses the distributive property.

1 .
What is 1 x 9
9
3
6
12
Any number multiplied by one remains unchanged
2 .
What is 5 x 9
45
65
75
55
45 is the sum of all the decimal digits. 0 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 45
3 .
What is 6 x 9
45
46
54
64
10 x 6 = 60 and 60 - 6 = 54
4 .
What is 8 x 9
72
73
74
71
10 x 8 = 80 and 80 - 8 = 72
5 .
What is 9 x 9
71
81
91
101
81 is 9 squared and 9 is the square root of 81
6 .
What is 4 x 9
34
32
38
36
To multiply 9 by 4 you could double it (18) and then double it again (36)
7 .
What is 3 x 9
25
29
31
27
There are 27 bones in a human hand
8 .
What is 2 x 9
29
11
18
92
To multiply a number by 2 just add it to itself
9 .
What is 10 x 9
108
106
99
90
To multiply any number by 10, just put a zero on its end
10 .
What is 7 x 9
83
73
63
93
70 - 7 = 63
You can find more about this topic by visiting BBC Bitesize - Time Tables

Author:  Frank Evans (Specialist 11 Plus Teacher and Tutor)

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