20 x 40 = 800
8 x 40 = 320
3 x 20 = 60
3 x 8 = 24
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They are 600, 240, 80 and 32.
34 x 28 = 34 x (20 + 8) First partial product is: (30 + 4) x 8 = 240 + 32 Second partial product is: (30 + 4) x 20 = 600 + 80 Sum of partial products = total product = 600 + 240 + 80 + 32 = 952
how to find the partial products of a number
4 x 20 = 80 4 x 7 = 28 80 + 28 = 108 4 x 27 = 108
60 x 40 = 2400 8 x 40 = 320 60 x 3 = 180 8 x 3 = 24 68 x 43 = 2924