Page 161 - NUMINO Challenge_C2

Answer
Key

Problem solving Problem solving

1 Half-dollars Dimes Nickels Pennies 11 2 3 4
8
3 1 0 0 567 12
0 2 0 9 10 11 16
2 0 1 5 13 14 15 20
5 2 0 17 18 19 24
5 1 5 21 22 23 28
4 4 0 25 26 27
4 3 5
3 5 5

There are 8 ways. The highest score that Brad cannot obtain is 23.

2 Notebook Pencil Eraser Total Number 21 2 3 4
0 1 of items
4 2 1 5678
3 1 5 5 9 10 11 12
3 6 13 14 15 16
9 17 18 19 20
21 22 23 24
Linda bought 5 erasers. 25 26 27 28

Type 12-2 Hitting the Target p.106~p.107 The longest length that Peter cannot measure is
17 cm.

1 Points Points Points Points
obtained obtained obtained obtained Points
by one 6- by two 6- by three by four 6- obtained Creative Thinking p.108~p.109

point dart point dart 6-point point dart by 5-
and 5- and 5- dart and and 5- point
point point 5-point point darts.
darts darts darts darts 1 First, think about the number of each type of

(6 1 5 (6 2 5 (6 3 5 (6 4 5 (5 ) envelope, then switch it with another type of
)))) points
envelope.
points points points points

12345 30-cent 10-cent 5-cent Total Number
Envelope Envelope Envelope of Envelopes
6 7 8 9 10
4 2 06
11 12 13 14 15
3 5 08
16 17 18 19 20
3 4 29
21 22 23 24 25

26 27 28 29 30 George bought two 5-cent envelopes.

2 19 points
3 10 points

NUMINO Challenge C2