Question

995-640:8-520
280:7+(861-599)

Answer 1

995 - 640 : 8 - 520 = 395

1) 640 : 8 = 80
2) 995 - 80 = 915
3) 915 - 520 = 395

280 : 7 + (861 - 599) = 302

1) 861 - 599 = 262
2) 280 : 7 = 40
3) 262 + 40 = 302

Answer 2

1)640/8=80  995-80=915   915-520=395
2) 861-599=262   280/7=40   262+40=302