Page 144 - NUMINO Challenge_C1

3 12, so 3. 2 104 92 12
1 2 3 3 12 or (1 2) 3 3 12
16 and 8
Answers will vary.
( )( ) 8 16
3 1 2 3 3 33 59 104
24 (1 2) 3 3 33 59 104
Answers will vary.
24 4 6
4 33 5 9 78 or 3 (35 9) 78
In the 3rd column from the left,
5 104 78 26
14 1 23 3 26 or 1 (23 3) 26

( ) 3 6 14 6 1 23 3 33 5 9 104
1 23 3 3 (35 9) 104
5 and 1 Answers will vary.

3 3 1 5 12 Problem solving

5 3 1 1 10 1 Use 5, 13, and 15 to make (15 13) 5 10.

Therefore, 12 10 22. Subtract it from 11 to make 1.
11 (15 13) 5 1
4 CDD C0
Answers will vary.
BDD B1
E D D E 4 and D 2 2 Use 2, 3, and 5 to form a number close to 69,
EDA 42A A6
Therefore, A E 6 4 24. which is 2 35 70. Use 8, 8, 8, and 9 to make 1
and subtract it.
3 Reaching a Target Number p.24~p.25
2 35 88 89 69
Example 1.5 2 2.5 6 1 1 2 35 8 8 8 9 69
1 2.5 1 2
2
2.5 2 1 1.5 2.5, 10 6 2

10 2 1.5 1

Answers will vary.

Example 36, 12 6, , , , , , , Type 3-2 Reaching Target Numbers in Different Ways (2) p.28~p.29
1 67
TryItAgain The number closest to 21 that can be 2 1 2 3 4 5 67 74
formed by putting two numbers together is 3 56
23. Insert and in between the other 4 12 3 4 56 7 74
numbers to make 21.
1 23 4 5 6 21.

Type 3-1 Reaching Target Numbers in Different Ways (1) p.26~p.27
1 33 59 92

Answer Key