# (225 – 1576) – (125 – 1576 + 176) 63 – 9.(10 + 7) 45.( –69) + 31.(–45) + (–27) (–23).(–48) – 23.148 – 245 47.(27 – 15) – 27.(47 – 15) 162 (73 49) (7

By Elliana

(225 – 1576) – (125 – 1576 + 176)
63 – 9.(10 + 7)
45.( –69) + 31.(–45) + (–27)
(–23).(–48) – 23.148 – 245
47.(27 – 15) – 27.(47 – 15)
162 (73 49) (73 162)

### 0 bình luận về “(225 – 1576) – (125 – 1576 + 176) 63 – 9.(10 + 7) 45.( –69) + 31.(–45) + (–27) (–23).(–48) – 23.148 – 245 47.(27 – 15) – 27.(47 – 15) 162 (73 49) (7”

1. anhthu

Đáp án:

a)

(225 – 1576) – (125 – 1576 + 176)

= 225 – 1576 – 125 + 1576 – 176

= (225 – 125) + (-1576 + 1576) – 176

= 100 + 0 – 176

= -76

b)

63 – 9.(10 + 7)

= 63 – 90 – 63

= -90

c)

45.( –69) + 31.(–45) + (–27)

= 45 . (-69 – 31) -27

= 45 . (-100) – 27

= -4500 – 27

= -4527

d)

(–23).(–48) – 23.148 – 245

= (-23) . (-48 + 148) – 245

= (-23) . 100 – 245

= -2300 – 245

= -2545

e)

47.(27 – 15) – 27.(47 – 15)

= 47 . 27 – 47 . 15 – 27 . 47 + 27 . 15

= (47 . 27 – 27 . 47) + 15 . (27 – 47)

= 0 + 15 . (-20)

= -300

f)

162 (73 49) (73 162) (cho chị xin lại đề)

Chị vừa làm bài này xong: https://hoidap247.com/cau-hoi/736155

Trả lời
2. minhuyen

$(225 – 1576) – (125 – 1576 + 176)$

$= 225 – 1576 – 125 – 1576 – 176$

$= (225 – 125) + (1576 – 1576) – 176$

$= 100 – 176$

$= -76$

$63 – 9 × (10 + 7)$

$= 63 – 90 – 63$

$= -90$

$45 × ( –69) + 31 × (–45) + (–27)$

$= 45 × (-69 – 31) + (-27)$

$= 45 × (-100) – 27$

$= -4500 – 27$

$= -4527$

$(–23) × (–48) – 23 × 148 – 245$

$= (-23) × (-48 + 148) – 245$

$= (-23) × 100 – 245$

$= -2300 – 245$

$= -2545$

$47 × (27 – 15) – 27 × (47 – 15)$

$= 47 × 27 – 47 × 15 – 27 × 47 + 27 × 15$

$= ( 47 × 27 – 27 × 47) + 15 × (27 – 47)$

$= 0 + 15 × (-20)$

$= -300$

$62 – (73 – 49) + (73 – 162)$

$= 62 – 73 + 49 + 73 – 162$

$= (62 – 162) + [(-73) + 73] + 49$

$= (-100) + 0 + 49$

$= (-100) + 49$

$= -51$

Trả lời