Page 53 - NUMINO Challenge_L2
P. 53
3. Solving by Drawing Pictures
Shaking Hands
Find the total number of handshakes when each friend shakes all the other
friends’ hands once.
2 friends: 1 handshake 3 friends: 3 handshakes
Show each handshake with a line and count the number of lines.
EExxpplloorree The number of bridges needed to connect all the islands to each
other needs to be found.
The number of lines used to connect three islands show the
number of bridges needed. 3 bridges are needed to connect all the
islands to each other.
EExxeerrcciissee France, Korea, and England will play a soccer match once with
each other. How many games will there be in total?
France
Korea England
50 NUMINO Challenge L2
Shaking Hands
Find the total number of handshakes when each friend shakes all the other
friends’ hands once.
2 friends: 1 handshake 3 friends: 3 handshakes
Show each handshake with a line and count the number of lines.
EExxpplloorree The number of bridges needed to connect all the islands to each
other needs to be found.
The number of lines used to connect three islands show the
number of bridges needed. 3 bridges are needed to connect all the
islands to each other.
EExxeerrcciissee France, Korea, and England will play a soccer match once with
each other. How many games will there be in total?
France
Korea England
50 NUMINO Challenge L2
