Page 49 - Spark of math 3
P. 49
Find the following.
3 1 7 5
+ = - =
5 5 9 9
5 12 10 9
+ = - =
8 8 17 17
4 3 5 1
+ = - =
12 12 7 7
7 3 19 7
+ = - =
30 30 19 19
3
Draw the shape to show .
4
49
