Question

Calcula: a) 5 + 4 . 3 + 24 : 12 b) 30 + 5 . (10+5) c) 4 : 2 + 3 . 5 d) 5 . (13-3) + 2 . (14-4)



a) 5 – [7 – (2+3)] b) 3 + [8 – (4+3)] c) 2 + [6 + (13-7)] d) 7 – [12 – (2+5)] e) 20 – [15 – (11-9)] f) 15 – [17 – (8+4)

Answer 1

Respuesta:

a) 5 + 4 × 3 + 24 ÷ 12 =

5 + 12 + 2 = 19

b) 30 + 5 × (10 + 5) =

30 + 5 × 15 =

30 + 75 = 105

c) 4 ÷ 2 + 3 × 5

4 ÷ 2 + 15

2 + 15 = 17

d) 5 × (13-3) + 2 × (14-4) =

5 × 10 + 2 × 10 =

50 + 20 = 70

a) 5-[7-(2+3)] =

5 - [ 7 - 5 ] =

5 - [ 2 ] =

5 - 2 = 3

b) 3 + [8 - (4+3) ]

3 + [ 8 - (4+3) ]

3 + [ 8 - 7 ]

3 + [ 1 ] = 3 + 1 = 4

c) 2 + [6 + (13-7)]

2 + [6 + 6 ] = 2 + 12 = 14

d) 7 - [ 12 - ( 2+5) ]

7 - [ 12 - 7 ]

7 - [ 5 ]

7 - 5 = 2

e) 20 - [ 15 - (11-9) ]

20 - [ 15 - (2)]

20 - [ 15 - 2 ]

20 - 13 = 7

f) 15 - [ 17 - (8+4) ]

15 - [ 17 - 12 ]

15 - [ 5 ]

15 - 5 = 10

Explicación paso a paso: