Study the table carefully.
- How many dots are there in Figure 9?
- How many dots are there in Figure 10?
- If there are 25 dots, what is the figure number?
(a)
Pattern for the number of dots
Figure 1: 1 = 1 x 1
Figure 2: 4 = 2 x 2
Figure 3: 9
= 3 x 3
Figure 4: 16 = 4 x 4
Formula:
Number of dots = Figure number x Figure number
Number of dots in Figure 9
= 9 x 9
= 81
(b)
Number of dots in Figure 10
= 10 x 10
= 100
(c)
5 x 5 = 25
Figure number with 25 dots = 5
Answer(s): (a) 81; (b) 100; (c) 5
