Page 139 - NUMINO Challenge_A1
P. 139
Answer
Key
2 When you connect the 2's by drawing a line to the right of the colored square, the 1's
cannot be connected. Therefore, you can only draw a line down from the colored square.
13 13
2 34 2 34
2 2
14 14
31 31 3
2 34 2 34
or
22
14 14
Problem solving
1 When you connect the 4's by drawing a line as shown below, the 1's and the 3's cannot be
connected.
34
21
43
1
2
Therefore, the numbers should be connected as shown below.
34
21
43
1
2
34 NUMINO Challenge A1
Key
2 When you connect the 2's by drawing a line to the right of the colored square, the 1's
cannot be connected. Therefore, you can only draw a line down from the colored square.
13 13
2 34 2 34
2 2
14 14
31 31 3
2 34 2 34
or
22
14 14
Problem solving
1 When you connect the 4's by drawing a line as shown below, the 1's and the 3's cannot be
connected.
34
21
43
1
2
Therefore, the numbers should be connected as shown below.
34
21
43
1
2
34 NUMINO Challenge A1
