6.44 Вычислите. a) 450 ⋅ 2 - 250 : 13 - 7 ? 6) 364 + 116 : 6 + 70 : 8 ? в) 200 ⋅ 5 - 250 : 150 ⋅ 12 ? г) 480: 20 + 80 : 4 - 20 ? д) 300 - 40 : 13 - 10 ⋅ 20 ?

Ответ: а) 3; б) 16; в) 12; г) 10; д) 0.

• a) 450 ⋅ 2 = 900; 900 - 250 = 650; 650 : 13 = 50; 50 - 7 = 43.
• б) 364 + 116 = 480; 480 : 6 = 80; 80 + 70 = 150; 150 : 8 = 18,75.
• в) 200 ⋅ 5 = 1000; 1000 - 250 = 750; 750 : 150 = 5; 5 ⋅ 12 = 60.
• г) 480 : 20 = 24; 24 + 80 = 104; 104 : 4 = 26; 26 - 20 = 6.
• д) 300 - 40 = 260; 260 : 13 = 20; 20 - 10 = 10; 10 ⋅ 20 = 200.

 a)
  450 * 2 = 900
  900 - 250 = 650
  650 : 13 = 50
  50 - 47 = 3

 6)
  364 + 116 = 480
  480 : 6 = 80
  80 + 70 = 150
  150 : 8 = 18,75

 в)
  200 * 5 = 1000
  1000 - 250 = 750
  750 : 150 = 5
  5 * 12 = 60

 г)
  480 : 20 = 24
  24 + 80 = 104
  104 : 4 = 26
  26 - 20 = 6

 д)
  300 - 40 = 260
  260 : 13 = 20
  20 - 10 = 10
  10 * 20 = 200

Ответ: а) 3; б) 18,75; в) 60; г) 6; д) 200.