Patterns in Numbers | 4th Maths Term 1 Unit 3

Patterns in numbers

Identify the patterns in multiplication and division (multiples of 9).

The multiples of 6 is coloured in orange for you.

Similarly, Colour the multiples of 5 in blue, Multiples of 9 in Red, Multiples of 10 in Green, Multiples of 11 in Pink.

Let us Know

Multiply any number by 9, the sum of all the digits of the product is 9.

Example : 1

\( 84 \times 9 = 756 \)
\( 7 + 5 + 6 = 18 \)
\( = 1 + 8 \)
\( = 9 \)

Example : 2

\( 43 \times 9 = 387 \)
\( 3 + 8 + 7 = 18 \)
\( = 1 + 8 \)
\( = 9 \)

Example : 3

\( 123 \times 9 = 1107 \)
\( 1 + 1 + 0 + 7 = 9 \)

Activity

Make patterns based on the multiples of 9.

Remember: If the sum of all digits of a number is 9 or divisible by 9, then the number is called multiple of 9.

Do you know

\( 12345679 \times 9 = 111111111 \)

\( 12345679 \times 18 = 222222222 \)

\( 12345679 \times 27 = 333333333 \)

\( 12345679 \times 36 = 444444444 \)

\( 12345679 \times 45 = 555555555 \)