Page 179 - NUMINO TB_1B
P. 179
1B˙ · -4–‡ 2011.3.22 5:41 PM ˘ ` 168 PDF_In 2540DPI 150LPI T
Activity 3 P. 40~41 6
1 . 7= + + 4 , 8= 8 7
13 10 3
9= 1 + 8 , 10= 2 + 8 10 5
11= 1 + 2 + 8 7 10 7
8
12= 4 + 8 15
13= 1 + 4 + 8 8
9
14= 2 + 4 + 8 17
15= + + + 8
16= 16
17= 1 + 16 , 18= 2 + 16
19= 1 + 2 + 16 , 20= 4 + 16
Unit 21. Expressing It My Way Activity 1 P. 44~46
P. 42~43 Round 1 Sample Answers 5 + 9 = 14
6 + 8 = 14 9 + 6 = 15
12 6 + 7 = 13 7 + 9 = 16
14, 5 + 6 = 11
7 6 7 8
7 +8 +7 +8
10+4=14 14 14 16
16, 8 Round 2 Sample Answers
8 8 + 7 = 15
10+6=16
8+2=5
18, 9
9 10+ 5 = 15
10+8=18
7+7 can be used to find 7+8 by adding 1 to
the sum of 7+7.
168
Activity 3 P. 40~41 6
1 . 7= + + 4 , 8= 8 7
13 10 3
9= 1 + 8 , 10= 2 + 8 10 5
11= 1 + 2 + 8 7 10 7
8
12= 4 + 8 15
13= 1 + 4 + 8 8
9
14= 2 + 4 + 8 17
15= + + + 8
16= 16
17= 1 + 16 , 18= 2 + 16
19= 1 + 2 + 16 , 20= 4 + 16
Unit 21. Expressing It My Way Activity 1 P. 44~46
P. 42~43 Round 1 Sample Answers 5 + 9 = 14
6 + 8 = 14 9 + 6 = 15
12 6 + 7 = 13 7 + 9 = 16
14, 5 + 6 = 11
7 6 7 8
7 +8 +7 +8
10+4=14 14 14 16
16, 8 Round 2 Sample Answers
8 8 + 7 = 15
10+6=16
8+2=5
18, 9
9 10+ 5 = 15
10+8=18
7+7 can be used to find 7+8 by adding 1 to
the sum of 7+7.
168
