Вычислим значение выражений и сравним их.
а) 300÷6 = 50; 47+3 = 50; 50 = 50
300÷6 = 47+3
б) 60×4 = 240; 160-60 = 100; 240 > 100
60×4 > 160-60
в) 900+8 = 908; 140×7 = (100+40)×7 = 700+280 = 980; 908 < 980
900+8 < 140×7
г) 609-9 = 600; 40×9 = 360; 600 > 360
609-9 > 40×9
д) 9000÷3-200 = 3000-200 = 2800; 600×4 = 2400; 2800 > 2400
9000÷3-200 > 600×4
е) 80×9+280 = 720+280 = 1000; 8000÷8 = 1000; 1000 = 1000
80×9+280 = 8000÷8
ж) (90+2)×5 = 450+10 = 460; 500-40 = 460; 460 = 460
(90+2)×5 = 500-40
з) (400-40)÷6 = 360÷6 = 60; 200-150 = 50; 60 > 50
(400-40)÷6 > 200-150
13 · 7 > 15 · [1, 2, 3, 4, 5, 6]
91 > [15, 30, 45, 60, 75, 90]
- - - - - - - - - - - -
160 : 10 + 14 < 18 · [2, 3, 4, ... +∞)
30 < [36, 54, 72, ... +∞)
75 : 15 + 49 > 19 · [1, 2]
54 > [19, 38]
120 : 4 < 200 : [1, 2, 4, 5]
30 < [200, 100, 50, 40]
350 : 7 + 15 > 12 + 160 : [4, 5, 8, 10, 16, 20, 32, 40, 80, 160]
65 > [52, 44, 32, 28, 22, 20, 17, 16, 14, 13]
210 : 3 - 25 < 150 : [1, 2, 3]
45 < [150, 75, 50]
Вычислим значение выражений и сравним их.
а) 300÷6 = 50; 47+3 = 50; 50 = 50
300÷6 = 47+3
б) 60×4 = 240; 160-60 = 100; 240 > 100
60×4 > 160-60
в) 900+8 = 908; 140×7 = (100+40)×7 = 700+280 = 980; 908 < 980
900+8 < 140×7
г) 609-9 = 600; 40×9 = 360; 600 > 360
609-9 > 40×9
д) 9000÷3-200 = 3000-200 = 2800; 600×4 = 2400; 2800 > 2400
9000÷3-200 > 600×4
е) 80×9+280 = 720+280 = 1000; 8000÷8 = 1000; 1000 = 1000
80×9+280 = 8000÷8
ж) (90+2)×5 = 450+10 = 460; 500-40 = 460; 460 = 460
(90+2)×5 = 500-40
з) (400-40)÷6 = 360÷6 = 60; 200-150 = 50; 60 > 50
(400-40)÷6 > 200-150
13 · 7 > 15 · [1, 2, 3, 4, 5, 6]
91 > [15, 30, 45, 60, 75, 90]
- - - - - - - - - - - -
160 : 10 + 14 < 18 · [2, 3, 4, ... +∞)
30 < [36, 54, 72, ... +∞)
- - - - - - - - - - - -
75 : 15 + 49 > 19 · [1, 2]
54 > [19, 38]
- - - - - - - - - - - -
120 : 4 < 200 : [1, 2, 4, 5]
30 < [200, 100, 50, 40]
- - - - - - - - - - - -
350 : 7 + 15 > 12 + 160 : [4, 5, 8, 10, 16, 20, 32, 40, 80, 160]
65 > [52, 44, 32, 28, 22, 20, 17, 16, 14, 13]
- - - - - - - - - - - -
210 : 3 - 25 < 150 : [1, 2, 3]
45 < [150, 75, 50]