32*20
320*2
8*80
160*4
10*64
21
80 x 8 = 640
20 :)
Twenty times thirty-two equals 640.
640
There's only one number that equals 640. The number is . . . . . 640.
(160 × 8), (256 × 5), (320 × 4), (640 × 2)
640 = acres in a square mile.
640
The product is: 409,600
(88-8)x8= 640
70 times :)
64 times (640 ÷ 10 = 64).