Page 190 - NUMINO TB_4B

NUMINO

c . 192, 32 d . 9, 144 2. 64 (8 2) 4

e . 60 f. 6 3 (7 4) 9
g. 9 h . 28 15 (5 2) 2 10
42 (3 2) 5 35
2 . c. 200 10 8 160, $160 8 (7 5) 6 16
(12 8) 5 10 10
d . 90 (6 5) 3, 3 hours 8 (27 18) 7 65

3 . Sample Answer Unit 26. Four Fours

200 (2 20) 5 4127 P. 92~93
4 2 18
There are 200 pieces of candy. 4 219 P. 94~95
There are 20 pieces of candy in a (4 1) 2 10 P. 98~99
packet. Each student will get 2 packets. (2 1) 4 4
How many students will get the packets 4215
4 126
of candies? 4 122
4 213
5 students 4121

Activity 3 P. 88~89

1 . 20 7 2 8 14 (20 7) 2 8 34
13
14 26
6 34

14

a . 5, 7 b . 4, 16 Activity 1
c . 45 d . 35 1. b. , ,
e . 34 f. 2
d. , ,
2 . b. 15 3 18 2 14 f. , , c. , ,
e. ,
There are 14 groups in all.

c . (8 5 7 5) 12 5 65

Kate has 65 marbles.

Challenge P. 90~91 Challenge

1 . Sample Answers 1 Result 1 . (30 _ 12) ı 2 + 4 13
1 28
Number Sentence 1 19 30 _ (12 ı 2) + 4 28
7 30 _ 12 ı (2 + 4) 32
(5 4) 3 2 15 (30 _ 12) ı (2 + 4) 20
5 (4 3) 2 30 _ (12 ı 2 + 4)
5 (4 3 2)

Answers 179