Page 160 - NUMINO Challenge_C2

2 Susan sits on cushion A, Dave sits on cushion B, 12 Frobenius Coin p.102~p.103

Jim sits on cushion C, and Billy sits on cushion Example 1, 8 4, 12 1 7
D. The tree diagram of Susan sitting on cushion
B is as shown below.

Susan Dave Jim Billy Number of half-dollars 4 33
B A D C Number of dimes 3 87
C D A Number of nickels 1 13
D A C 8 12 13
Total Number of coins
There are 3 3 9 outcomes.

3 The tree diagram for each case is as shown below. Example 4 2, 3 11

Hundreds Tens Ones 1234
1 2 3 567
3 2 9 10 11 12
13 14 15 16
Hundreds Tens Ones 17 18 19 20
2 0 1 21 22 23 24
3 25 26 27 28
1 3
3 0
1

Hundreds Tens Ones
3 0 1
2
1 2 Type 12-1 Exact Change p.104~p.105
2 0
1

There are 12 outcomes. 1 1-Dollar bills Half-dollars Dimes Nickels
20 0 0
4 Red Blue Yellow 12 0 0
11 5 0
AB C 11 4 2
11 3 4
D

CB

D

DB

C 2 1-Dollar bills Half-dollars Dimes Nickels
04 0 0
There are 6 ways to put a red ball into bag A. 03 5 0
03 4 2
The number of ways to put a red ball into bag B, 03 3 4

C, and D are the same; therefore, there are

6 4 24 ways to put each ball into bags A, B,

C, and D.

3 9 ways

Answer Key