Page 93 - NUMINO Challenge_B1
P. 93
Type 10-2 Differences Between the Number of Stones
White and black stones are arranged into a triangle as shown below.
By the 10th row, are there more white or black stones? What is the
difference between the number of white and black stones?
1st
2nd
3rd
4th
1 Divide the stones into two rows to find the difference between the number
of white and black stones by looking at the even numbered rows. Complete
the table below.
1st
2nd
3rd
4th
5th
6th
By the th row 2nd 4th 6th 8th
Number of Black Stones 2 6 12
Number of White Stones 1 4 9
Difference 123
2 By the 10th row, are there more white or black stones? What is the
difference between the number of white and black stones?
3 By the 20th row, are there more white or black stones? What is the
difference between the number of white and black stones?
90 NUMINO Challenge B1
White and black stones are arranged into a triangle as shown below.
By the 10th row, are there more white or black stones? What is the
difference between the number of white and black stones?
1st
2nd
3rd
4th
1 Divide the stones into two rows to find the difference between the number
of white and black stones by looking at the even numbered rows. Complete
the table below.
1st
2nd
3rd
4th
5th
6th
By the th row 2nd 4th 6th 8th
Number of Black Stones 2 6 12
Number of White Stones 1 4 9
Difference 123
2 By the 10th row, are there more white or black stones? What is the
difference between the number of white and black stones?
3 By the 20th row, are there more white or black stones? What is the
difference between the number of white and black stones?
90 NUMINO Challenge B1
