72
89
1x72, 72x1, 2x36, 36x2, 3x24, 24x3, 4x18, 18x4, 6x12, 12x6, 8x9, 9x8
1+2+3+4+5+6+7+(8x9)=100
If AC equals 6 and BD equals 4, then AB equals 5.
When equals are added to equals, you don't necessarily get wholes. But whatever you do get, they're equal.
9
98
what is the property of 8x9?
8x9=72; 72-12=60; 60-8=52.
8x9=72
8x9=72
(8.10) (8.9)
8 * 9 --- 72
72
81 8x9 is 72
1x72 2x36 3x24 4x18 6x12 8x9
Sssa
8x9=72-10=62-30=32+4=36