Page 94 - NUMINO Challenge_B1
P. 94
Problem solving
Key Points
1 If white and black stones are arranged as shown Black 4 6
below, what is the difference in the number of Stones 1 2
black and white stones in the tenth arrangement? 4
White
Stones
Difference 3
2 Stones are arranged as shown below. When will Black 7
there be more white stones than black stones? Stones (5+2)
White 5 3
Stones 1 (1+2)
91Rules for Shapes
Key Points
1 If white and black stones are arranged as shown Black 4 6
below, what is the difference in the number of Stones 1 2
black and white stones in the tenth arrangement? 4
White
Stones
Difference 3
2 Stones are arranged as shown below. When will Black 7
there be more white stones than black stones? Stones (5+2)
White 5 3
Stones 1 (1+2)
91Rules for Shapes
