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Answers may vary. They might have counted the Activity 4 P. 98~99
blocks. Some might have figured out the
multiplication sentences. 1 . Number of erasers: 13 5 = 65

50, 40, 90 Number of pencils: 17 4 = 68
120, 150, 0 Therefore, Jessica bought more pencils than

erasers.

Activity 1 P. 92~93 2 . a. Eggs: 6 16 = 96
1 . b. 39, 39
c . 64 Oranges: 4 32 = 128
c . 84, 84 f . 86
2 . a. 66 i . 62 Ann bought more oranges than eggs.

d . 46 b . 28 b . Third graders: 8 31 = 248
g . 36 e . 96
j . 84 h . 42 Fourth graders: 4 52 = 208
k . 66 There are more third graders in Ann’s

school.

Unit 11. The Magic Rods

Activity 2 P. 94~95 P. 100~101

1 . There are 126 students going on the field trip. 57
12
If there are 3 buses with 42 students on each
bus, you can multiply 3 by 42 to get 126. 5 13

2 . a. 153 b . 128 c . 189 171

d . 168 e . 126 f . 129 2 4
1 3
g . 324 h . 213 i . 205
6 28
j . 148 k . 182

192

Activity 3 P. 96~97 4 3
1 . b. 45, 1; 45 3
c . 87 2 9
c . 64, 2; 64 f . 96 6 , 387
2 . a. 51 i . 76 7

d . 72 b . 52 387
g . 90 e . 80
j . 75 h . 98 5 6
k . 54 3
3 6
0 , 336
6

336

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