Transcript Document

Square sums
Find the difference between each pair of corner numbers. Then
add all the differences and divide the total by 4. Write your
answer in the middle. The first one is done for you.
Hint: To divide by 4, halve the number twice.
1. 76 24 100
44
100
5. 74
130
53
144
120
60 76
120 96 24
2.
3. 47
32
100
4. 21
98
68
98
100
79
6.
46
18
100
136
82
Square sums
Find the difference between each pair of corner numbers. Then
add all the differences and divide the total by 4. Write your
answer in the middle. The first one is done for you.
Hint: To divide by 4, halve the number twice.
1. 76 24 100
44
60 76
120 96 24
2.
32 68 100
3. 47 53 100
83
5. 74 46 120
65 47
70
130 77 53
4. 21 79 100
72 74
144 98 46
6.
18 82 100
66 49 32
77 49 21
118
68 18
98 30 68
98 19 79
136 54 82