Page 24 - NUMINO Challenge_B2
P. 24
Problem solving Key Points
1 The sum of five numbers in a colored shape as Assume that the
shown below is 170. What is the greatest of the number in the center
five numbers? is . Use the sum of
1 7 13 19 25 31 37 43 and the other
2 8 14 20 26 32 38 44 numbers to represent
3 9 15 21 27 33 39 45 the sum of the five
4 10 16 22 28 34 40 46 numbers.
5 11 17 23 29 35 41 47
6 12 18 24 30 36 42 48
2 Dan wants to find the sum of six numbers in a Pair the six numbers
colored shape as shown below. Which of the such that the sums
following cannot be the sum of the six numbers? of all the pairs are
equal.
98 76 54 3 21
18 17 16 15 14 13 12 11 10
27 26 25 24 23 22 21 20 19
36 35 34 33 32 31 30 29 28
45 44 43 42 41 40 39 38 37
54 53 52 51 50 49 48 47 46
63 62 61 60 59 58 57 56 55
72 71 70 69 68 67 66 65 64
315 99 244 171 283
21Number and Operations
1 The sum of five numbers in a colored shape as Assume that the
shown below is 170. What is the greatest of the number in the center
five numbers? is . Use the sum of
1 7 13 19 25 31 37 43 and the other
2 8 14 20 26 32 38 44 numbers to represent
3 9 15 21 27 33 39 45 the sum of the five
4 10 16 22 28 34 40 46 numbers.
5 11 17 23 29 35 41 47
6 12 18 24 30 36 42 48
2 Dan wants to find the sum of six numbers in a Pair the six numbers
colored shape as shown below. Which of the such that the sums
following cannot be the sum of the six numbers? of all the pairs are
equal.
98 76 54 3 21
18 17 16 15 14 13 12 11 10
27 26 25 24 23 22 21 20 19
36 35 34 33 32 31 30 29 28
45 44 43 42 41 40 39 38 37
54 53 52 51 50 49 48 47 46
63 62 61 60 59 58 57 56 55
72 71 70 69 68 67 66 65 64
315 99 244 171 283
21Number and Operations
