Page 183 - NUMINO TB_4B

0.9 + 0.1 0.7 + 0.2 0.3 + 0.8 0.6 + 0.5 0.8 + 0.2 Activity 2 P. 24~25
0.4 + 0.7 0.5 + 0.5 0.6 + 0.8 0.4 + 0.6 0.5 + 0.7

100 squares, 1, Color 84 squares to show 0.84, and color
79 squares to show 0.79. Count the total

number of colored squares to find the sum.

1 . a . 0.99 b . 1.06 c . 1.03

,1 ,1 d . 0.85 e . 0.93 f . 1.37
e . 9.22
2 . a . 1.00 b . 2.62 c . 5.80

0.61 0.54 3 . a . 0.94 0.32 1.26
0.12 0.74
1.26 L of water
0.26
0.88 b . 2.45 0.36 2.81
0.46
2.81 kg
0.39
c . 8.37 4.46 12.83

12.83 m

Activity 1 P. 22~23 Activity 3

1 . a . 1.38 b . 2.14 P. 26~27

d . 17.96 e . 6.56 c . 20.36
f . 10.79
Each square represents 1. 2 . a . 0.922 b . 10.143 c . 11.347
So color 9 columns to show 0.9, and color f . 15.201
7 columns to 0.7. Then count the total number d . 0.423 e . 5.824

of columns to find the sum. 3 . a . 3.82 5.3 9.12

9.12 kg

1 . a . 0.9 b . 1.0 c . 1.1 b . 16.34 4.7 21.04

d . 0.6 e . 1.4 f . 1.3 21.04 m
2 . a . 1.9 e . 16.2
b . 2.1 c . 5.4

3 . a . 0.4 0.2 0.6 Activity 4 P. 28~29
1 . b . 0.81, 1.11, Increase by 0.1
0.6 L
c . 3.21, 3.16, Increase by 0.05
b . 1.8 0.3 2.1 d . 1.93, 2.26, Increase by 0.11
e . 3.02, 3.00, Increase by 0.01
2.1 kg f . 5.55, 5.7, Increase by 0.05

c . 2.7 1.5

4.2
4.2

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