Question

320*99+320
404*27+64*27
704*21+32*63

Answer 1

320*99+320=320*100=32000

404*27+64*27=27*(404+64)=27*468=12636

704*21+32*63 =704*21+96*21=21*(704+96)=21*800=16800

Answer 2

столбиком надо было

Answer 3

320*99+320= 31680+320 = 32000
404*27+64*27= 10908+1728=12636
704*21+32*63= 14784+ 2016 =16800