Page 181 - NUMINO TB_3B
P. 181
3˙—‡ -B˙ · -ok 2011.3.23 1:1 PM ˘ ` 170 PDF_In 2540DPI 100LPI T

d. 5 1 4 2 . b . Sample Answer
7 7 7
Students in the classroom are measuring to

When subtracting like fractions, the smaller see which pair has the longest amount of

fraction must be subtracted from the larger rope. If Ryan has 3 m and Thomas has 1 m,
6 6
fraction. The numerator is difference of
2 numerators. The denominator remains the same. how many meters do they have

altogether?

Activity 2 P. 90~91 3 1 4, 4 m
6 6 6 6

1. a. 2 b. 3 c . Sample Answer
9 5
7 of the students are in class today. 5 of
9 9
3 5
c. 7 d. 8 the class have to finish their tests. What is

3 4 the fraction of the class that are present and
12 11 not taking the test?

e. f. 7 5 2, 2
9 9 9 9
of the class

g. 7 h. 1
10 13

2. a. 10 Unit 27. What Is the Dot?
7 km

b. 10 4 6
7 7 7 km
P. 94~95
2
3. a. 6 4 7 b. 5 4 1 652
7 4 6 6 6 10 , 10 , 10
7 7
6 2 514 0.8, 0.7, 0.6, 0.5, 0.3, 0.1
5
7 7 8 666 15, 20
2 0.4, 0.7, 1.5, 2
c. 7 2 8 d. 2 1 1
8 3 3 3
8 458
7 5 100 , 100 , 100

8 8 0.05, 0.06, 0.09

Activity 3 P. 92~93 1 out of 10 can be expressed as 0.1 or 1 .
10

1. b. 3 2 1 1 out of 100 can be expressed as 0.01 or 1 .
8 8 8, 100

Ryan reads 1 more on Tuesdays.
8
Activity 1 P.96~98

c. 5 2 3 1. b. 7 , 0.7 c. 5 , 0.5
6 6 6, 10 10

Kate drinks 3 L of the water. 9
6 10
2 . b . 0.6 c.

170
   176   177   178   179   180   181   182   183   184   185   186