The difference between 90 and 80 is 10 because 90 - 80 = 10
6 x 15 = 90
5 x 16 = 80
I predicted that the difference for all 2x2 spares will be 10, I'll do another 2 by 2 grid to confirm that my prediction is correct.
The difference between 7636 and 7626 is 10 because 7636 - 7626 = 10
83 x 92 = 7636
82 x 93 = 7626
This shows that my prediction is correct, that all 2 by 2 will equal to 10.
3 by 3
I'm going to draw a box round nine numbers then I will find the product of top left, bottom right numbers, and then I'm going to do the same with the top right, bottom right numbers.
The difference between 63 and 23 is 40 because 63 - 23 = 40.
3 x 21 = 63
1 x 23 = 23
The difference between 208 and 168 is 40 because 208 - 168 = 40.
8 x 26 = 208
6 x 28 = 168
The difference between 1215 and 1175 is 40 because 1215 - 1175 = 40
27 x 45 = 1215
25 x 47 = 1175
I predicted that the difference for all 3 by 3 spares will be 40, I'll do another 3 by 3 grid to confirm that my prediction is correct.
The difference between 648 and 608 is 40 because 648 - 608 = 40
18 x 36 = 648
16 x 38 = 608
This shows that my prediction is correct, that all 3 by 3 will equal to 30.
4 by 4
I'm going to draw a box round sixteen numbers then i will find the product of top left, bottom right numbers, and then I'm going to do the same with the top right, bottom right numbers.
The difference between 748 and 658 is 90 because 748 - 659 = 90.
17 x 44 = 748
14 x 47 = 658
The difference between 1458 and 1368 is 90 because 1458 - 1368 = 90.
27 x 54 = 1458
24 x 57 = 1368
The difference between 4930 and 4840 is 90 because 4930 - 4840 = 90.
58 x 85 = 4930
55 x 88 = 4840
I predicted that the difference for all 4 by 4 spares will be 90, I'll do another 4 by 4 grid to confirm that my prediction is correct.
The difference between 4930 and 4940 is 90 because 4930 - 4940 = 90.
54 x 81 = 4374
51 x 84 = 4284
This shows that my prediction is correct, that all 4 by 4 will equal to 90.
5 by 5
I'm going to draw a box round twenty five numbers then I will find the product of top left, bottom right numbers, and then I'm going to do the same with the top right, bottom right numbers.
The difference between 205 and 45 is 160 because 205 - 45 = 160.
5 x 41 = 205
1 x 45 = 45
The difference between 5605 and 5445 is 160 because 5605 - 5445 = 160.
59 x 95 = 5605
55 x 99 = 5445
The difference between 3772 and 3612 is 160 because 3772 - 3612 = 160.
46 x 82 = 3772
42 x 86 = 3612
I predicted that the difference for all 5 by 5 spares will be 160, I'll do another 5 by 5 grid to confirm that my prediction is correct.
The difference between 2925 and 2765 is 160 because 2925 - 2765 = 160.
39 x 75 = 2925
35 x 79 = 2765
This shows that my prediction is correct, that all 5 by 5 will equal to 160.
6 by 6
I'm going to draw a box round twenty five numbers then I will find the product of top left, bottom right numbers, and then I'm going to do the same with the top right, bottom right numbers.
The difference between 1846 and 1596 is 250 because 1846 - 1596 = 250.
26 x 71 = 1846
21 x 76 = 1596
The difference between 306 and 56 is 250 because 306 - 56 = 250.
6 x 51 = 306
1 x 56 = 56
The difference between 3154 and 2904 is 250 because 3154 - 2904 = 250.
38 x 83 = 3154
33 x 88 = 2904
I predicted that the difference for all 6 by 6 spares will be 250, I'll do another 6 by 6 grid to confirm that my prediction is correct.
The difference between 1216 and 966 is 250 because 1216 - 966 = 250.
19 x 64 = 1216
14 x 69 = 966
