NCERT Book Class 5 Mathematics (Math Mela) Chapter 13 Animal Jumps

Chapter

13 Animal Jumps

Find the hidden numbers.
Numbers put in this box get
multiplied by a number and come out.
(a) Can you guess the multiplier if
you see the 4 numbers coming
out of the box?
(b) Is there more than one possible
multiplier?
(c) What numbers might have been
put inside the box?

Share your thoughts in the class.
You can also play this game with your friends.
The multipliers 1, 2, and 4 that you found above are the factors of the
numbers that have come out of the box, that is, 28, 36, 48, and 72.
In fact, these are the common factors of all the numbers. The numbers 28,
36, 48, and 72 are multiples of 1, 2 and 4.
The product of two or more factors gives a multiple.
A number, when arranged in an array, shows the factors of that number.
Are there other numbers that are factors of 15? Try to make other arrays
for the number 15.

3 × 5 = 15

Factors Multiple

Let us make arrays for the number 12.

1 × 12 = 12
2 × 6 = 12
3 × 4 = 12