Answer:
211 × 9 is 1899 so rounding to nearest thousands would be 2000
The better deal is the 21-ounce one because its unit rate equals less than the 17-ounce one
The partial products are: 42 x 28 = (40 + 2) x (20 + 8) = 40 x 20 + 40 x 8 + 2 x 20 + 2 x 8
= 800 + 320 + 40 + 16 Hope this helped.