Page 176 - TB_5B

NUMINO

Activity 2 P. 42~43 Challenge P. 46~47

35, 0.35 b. 1 . a . 20 4 = 5

1. a. Since 20 is divided by 4, the 20th products’
ones place digit is 6.

0.10 0.49 b . 2, 4, 8, and 6 are repeated.

c. Since 4 numbers are repeated, divide
20 by 4.
20 4 = 5
Since 20 is divided by 4, the last digit of
the 20th product is 6.

0.24 c . 7, 9, 3, and 1 are repeated.

2 . a . 0.42, 0.12 Since 4 numbers are repeated, divide
22 by 4.
22 4 = 5 r 2
Since the remainder is 2, the last digit of
the 22nd product is 9.

b . 0.24, 0.27, 0.12, 0.54

c . 0.4, 0.24, 0.15, 0.64

3 . a . 0.021 b . 0.015 c . 0.012 Unit 22. Divide the Money Equally

Activity 3 P. 44~45 P. 48~49

15, 21, 315, 3.15 Each person would get $2.
15, 30, 315, 3.15 Each person would get $3.
Each person would get $3.50.
1 . a . 0.45 b . 2.22 Exchange $2 for 4 half dollar coins.
When an amount of money cannot be divided
c . 17.64 d . 3.712 using only bills, dollar bills can be exchanged
for coins.
.2 . a. 1 10 b. 1.56 c. 230.1
d. 23.04 =
.e. 3321 0 .f. 169 464 =

3 . a . 4.25 b . 3.96 c . 5.39

d . 3.445 e . 9.078 f . 1.53 Activity 1 P. 50~51

4 . a . 4.2 1.55 = 6.51 1 . a . 1.2 b . 2.3 c . 2.8 b . 1.2

$6.51 To find the quotient, first divide as you would with
whole numbers, and then place the decimal point
b . 2.5 3.21 = 8.025 in the appropriate place.

8.025 km

2 . a . 1.34 b . 1.25 c . 1.54 b . 2.47

3 . a . 9.45 3 = 3.15

3.15 cm

Answers 165