Page 72 - NUMINO Challenge_A1
P. 72
Number of Stones in the Arrangement
Write addition sentences to represent the number of stones in the 7th
row as shown below.
1 123 1236 1 2 3 4 5 6 7 28
7th
1st 2nd 3rd 4th
3 336
In a Nutshell Number of Sides in the nth Arrangement
A certain number of sides is added to each previous shape in a
sequence according to a rule. You can easily find the number of
sides added by using the equation below.
nth shape
3 325 3227 32229 322 2
(n 1)
⎫
⎬
⎭
69Patterns
Write addition sentences to represent the number of stones in the 7th
row as shown below.
1 123 1236 1 2 3 4 5 6 7 28
7th
1st 2nd 3rd 4th
3 336
In a Nutshell Number of Sides in the nth Arrangement
A certain number of sides is added to each previous shape in a
sequence according to a rule. You can easily find the number of
sides added by using the equation below.
nth shape
3 325 3227 32229 322 2
(n 1)
⎫
⎬
⎭
69Patterns
