Page 45 - Y5.pdf
P. 45
See Pupil's Book page 46
Index 3 7 2
372
~
4l 9 1488
8
0
To multiply 372 by 4: Set up the rods as shown.
Write out the top digit in the first (right-hand) column.
Then follow the pointer to the tens digit. etc.
Index 2 5 4
254
0 ~
5l 2 1270
1
3
4 4
Index 4 7
47
0 9 ~
0
1
7 1
329
2
2
3
3
4
5
6 4
Use the Genaille sticks to work out :
a 368 b 683 c 836 d 638
2 Here is a Genaille strip for base 5.
Make up the rest of the base 5 set!!!
43
