Page 178 - NUMINO TB_2B
P. 178
2B ˙ · (2–‡) 2011.3.226:50PM ˘ ` 167
h. 3 8 i. 4 9 Activity 1 P. 14~15
46 66 1 . a . 1 2 3 4 5 6 7 8 9 10
64 94
83
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
Challenge P. 10~11 31 32 33 34 35 36 37 38 39 40
1. 6 41 42 43 44 45 46 47 48 49 50
In order to balance the scale, 1 weight needs 51 52 53 54 55 56 57 58 59 60
to be placed on 6 on the right.
2 . Place a weight on 10 on the left side. 61 62 63 64 65 66 67 68 69 70
Place 2 weights that add up to 10 on the 71 72 73 74 75 76 77 78 79 80
hooks. (Ex. Weights on 1 and 9, 2 and 8, 3
and 7, 4 and 6, or 5 and 5.) 81 82 83 84 85 86 87 88 89 90
The result of multiplying the number of
weights by the number on the hook where 91 92 93 94 95 96 97 98 99 100
the weights are placed must equal 10.(Ex.
2 weights on 5, 5 weights on 2.) b. 12345
8 16 24 32 40
3 . Put 4 weights on 3. 8 9 18 27 36 45
9
4, 3
Put 2 weights on 6. 6 7 8 9 10
2, 6 8 48 56 64 72 80
9 54 63 72 81 90
Put 3 weights on 4. 2. a. 6 8 48 b . 4 9 36
3, 4 6 48
8 6 6 36
9 4 36
Unit 18. Patterns on the Hundred Chart c . 7 9 63
d . 3 8 24
P. 12~13 9 7 63
The tens digits increase by 1, and the ones 4 6 24
digits decrease by 1 as you go down the rows. 6 4 24
The numbers are skip-counted by 9s. The 8 3 24
diagonal line follows the same rule.
Activity 2 P. 16~17
The colored numbers are skip-counted by 3s.
When you read the numbers in order, the 1 . The multiplication table of 7 is easier to use
colored numbers increase by 3 each time.
because you can multiply less number of times
to get to 21. The greater number between the
2 factors is the number that the table is based
on.
2 . a . 3 5 15, 15 apples
123456789
3 3 6 9 12 15 18 21 24 27
Answers 167
h. 3 8 i. 4 9 Activity 1 P. 14~15
46 66 1 . a . 1 2 3 4 5 6 7 8 9 10
64 94
83
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
Challenge P. 10~11 31 32 33 34 35 36 37 38 39 40
1. 6 41 42 43 44 45 46 47 48 49 50
In order to balance the scale, 1 weight needs 51 52 53 54 55 56 57 58 59 60
to be placed on 6 on the right.
2 . Place a weight on 10 on the left side. 61 62 63 64 65 66 67 68 69 70
Place 2 weights that add up to 10 on the 71 72 73 74 75 76 77 78 79 80
hooks. (Ex. Weights on 1 and 9, 2 and 8, 3
and 7, 4 and 6, or 5 and 5.) 81 82 83 84 85 86 87 88 89 90
The result of multiplying the number of
weights by the number on the hook where 91 92 93 94 95 96 97 98 99 100
the weights are placed must equal 10.(Ex.
2 weights on 5, 5 weights on 2.) b. 12345
8 16 24 32 40
3 . Put 4 weights on 3. 8 9 18 27 36 45
9
4, 3
Put 2 weights on 6. 6 7 8 9 10
2, 6 8 48 56 64 72 80
9 54 63 72 81 90
Put 3 weights on 4. 2. a. 6 8 48 b . 4 9 36
3, 4 6 48
8 6 6 36
9 4 36
Unit 18. Patterns on the Hundred Chart c . 7 9 63
d . 3 8 24
P. 12~13 9 7 63
The tens digits increase by 1, and the ones 4 6 24
digits decrease by 1 as you go down the rows. 6 4 24
The numbers are skip-counted by 9s. The 8 3 24
diagonal line follows the same rule.
Activity 2 P. 16~17
The colored numbers are skip-counted by 3s.
When you read the numbers in order, the 1 . The multiplication table of 7 is easier to use
colored numbers increase by 3 each time.
because you can multiply less number of times
to get to 21. The greater number between the
2 factors is the number that the table is based
on.
2 . a . 3 5 15, 15 apples
123456789
3 3 6 9 12 15 18 21 24 27
Answers 167
