Question

Bài 1 Tính nhanh

A) ( 42 * 43 +43 * 57 +43 ) - 360 /4

B) 322-19*4+ ( 981 : 9-13)

C) 450 : 2 * 18 +456 : 3-120

Answer 1

A) ( 42 x 43  + 43 x 57 + 43 ) - 360 : 4

= ( 42 x 43  + 43 x 57 + 43 x 1 ) - 360 : 4

= [ 43 x ( 42 + 57 + 1 ) ] - 360 : 4

= ( 43 x 100 ) - 360 : 4

=     4300      - 360 : 4

=     4300      -    90

=            4210

B) 322 - 19 x 4 + ( 981 : 9 - 13 )

= 322 - 19 x 4 + ( 109 - 13 )

= 322 - 19 x 4 +       96

= 322 -    76    +       96

=      246         +      96

=                 342

C) 450 : 2 x 18 + 456 : 3 - 120

=    225    x 18 +   152    - 120

=        4050      +   152    - 120

=                4202             - 120

=                          4082

Answer 2

sai đề

Answer 3

Câu trả lời của mình cũng như bạn vbn

Answer 4

a) =4210

b) = 342

c) =4082

Answer 5

hình như bạn chép sai đề rùi hay sao í

Answer 6

a=4210;b=324;c=4082.yên tâm đi mình chắc chắn 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%

Answer 7

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Answer 8

what the heo